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Old 11-07-2014, 02:46 AM   #946
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His car was running super lean, he didn't caliberate for MAF sensor, car was misfiring, had transmission issues I guess it wouldn't stay in 3rd gear.. one of his plugs were baked, and had low compression in one of his cylinders. Sad none the less

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Old 11-07-2014, 03:12 AM   #947
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wide band AFR gauge would have been your best friend... thats a bummer ideally you wanna be idling around 14.00 and 11.5-12's at wot.. i wonder how lean he was running at wot??
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Old 11-07-2014, 08:07 AM   #948
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That's the risk you take sadly when playing with boost....
2011 what psi are you running with the Procharger?
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Old 11-07-2014, 09:17 AM   #949
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Old 11-07-2014, 09:44 AM   #950
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Oh ok, lol your listed numbers had me worried for a bit. I was thinking they were all 8psi kits for some reason. Still add 2psi will be adding about 20-30 whp...not bad
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Old 11-07-2014, 10:18 AM   #951
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I'm confused as well... IF the LPF MAF diameter was the same as stock (which i was told it was), then it should have needed virtually zero tuning (as far as the MAF was concerned). The fuel targets would need to be adjusted obviously, because you run richer with FI than NA, but something isn't adding up, because misfires can be tied to fueling as well ... Do you mind posting some of those logs for me to poke through if you haven't already?


I have no opinion on who is right or wrong, just want to see some things for myself, thanks.
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Old 11-07-2014, 10:22 AM   #952
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Detective volt is on the case

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Old 11-07-2014, 10:30 AM   #953
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Old 11-07-2014, 10:41 AM   #954
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^ That's what she said!

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Old 11-07-2014, 07:43 PM   #955
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@volt
I will post my WOT log and my idle log sometime tonight

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---------- Post added at 07:43 PM ---------- Previous post was at 07:42 PM ----------

And the maf is slightly larger than stock

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Old 11-07-2014, 10:36 PM   #956
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No photos? I figured you had some on your phone. How'd you do your fogs?

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Old 11-07-2014, 11:35 PM   #957
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No photos? I figured you had some on your phone. How'd you do your fogs?

Luke 11:9-10 “So I say to you ...*search and you will find; knock and the door will be opened to you.
I made a thread on it a while back. Sorry if I sound lazy

And I didn't get to my laptop.
Spent 40 mins undoing the front end.
Got intake mani, front bumper, intercooler, cold side, and boost gauge out

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Old 11-08-2014, 08:49 AM   #958
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Okay! I didn't realize you made a thread for it. Will try to find it.

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Old 11-09-2014, 09:01 PM   #959
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I'm confused as well... IF the LPF MAF diameter was the same as stock (which i was told it was), then it should have needed virtually zero tuning (as far as the MAF was concerned). The fuel targets would need to be adjusted obviously, because you run richer with FI than NA, but something isn't adding up, because misfires can be tied to fueling as well ... Do you mind posting some of those logs for me to poke through if you haven't already?


I have no opinion on who is right or wrong, just want to see some things for myself, thanks.
sorry for the late response to this....
finally got on my laptop, but i can't upload that type of file. how should I go about sending you the log?
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Old 11-10-2014, 01:39 AM   #960
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@alrefire

i'm kinda late to responding, but what happen with the tune exactly sorry you have to re-explain.

i have a twin turbo set up and my car is auto but id go on the highway and get to speed 75-80 and my car would just stall after letting off the gas. so id have to throw it in Neutral and restart it back up. same thing when i came to stop light or sign it would just motor off and all electronics would be on. was really fustrating and dangerous. then 3 days later my block cracked drivers side 2nd cylinder.

Did your tune make it stall
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Old 11-10-2014, 08:15 AM   #961
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@alrefire

i'm kinda late to responding, but what happen with the tune exactly sorry you have to re-explain.

i have a twin turbo set up and my car is auto but id go on the highway and get to speed 75-80 and my car would just stall after letting off the gas. so id have to throw it in Neutral and restart it back up. same thing when i came to stop light or sign it would just motor off and all electronics would be on. was really fustrating and dangerous. then 3 days later my block cracked drivers side 2nd cylinder.

Did your tune make it stall
I beleive it was.
I reverted the car back to stock, and i haven't stalled yet

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Old 11-10-2014, 09:01 AM   #962
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Just keep it that way...you had the fun but its not worth the money or the headache...trust me ive been there. Went through 3 engines in my last car because I couldnt stop ****ing with it. Save it for when you have a separate DD.
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Old 11-10-2014, 09:08 AM   #963
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I beleive it was.
I reverted the car back to stock, and i haven't stalled yet

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okay so im not the only auto to stall, shop thought i was crazy when i told them it kept stalling and didn't stall when they drove it, pissed me off my car did that made me look coo-coo.
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Old 11-10-2014, 10:55 AM   #964
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okay so im not the only auto to stall, shop thought i was crazy when i told them it kept stalling and didn't stall when they drove it, pissed me off my car did that made me look coo-coo.
Happened on my automatic mercury mystique too when it got 10 years old. You're not coo-coo.

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Old 11-10-2014, 05:57 PM   #965
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Save it for when you have a separate DD.
THIS, When you're building a toy, you need to make sure you have backup transportation, gotta assume anything and everything will go wrong.
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Old 11-10-2014, 07:33 PM   #966
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^fawking Murphy!

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Old 11-10-2014, 07:42 PM   #967
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THIS, When you're building a toy, you need to make sure you have backup transportation, gotta assume anything and everything will go wrong.






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Just keep it that way...you had the fun but its not worth the money or the headache...trust me ive been there. Went through 3 engines in my last car because I couldnt stop ****ing with it. Save it for when you have a separate DD.
Living life on the edge 😈😎 lol

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Old 11-10-2014, 09:09 PM   #968
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Ok Tupac...easy
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Old 11-10-2014, 10:29 PM   #969
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Lol. In alrefire's defense, Connor had been running his car as his only DD, and that was the only example he had to go off of.

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Old 11-10-2014, 10:38 PM   #970
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let's just say the boost is addictive...
and I'm almost tempted to put the turbo on the replacement motor....
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Old 11-11-2014, 01:39 AM   #971
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let's just say the boost is addictive...
and I'm almost tempted to put the turbo on the replacement motor....
I would say go for it if you can find a competent tuner that you have 100% confidence in that will actually listen to lpf

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Old 11-11-2014, 02:45 AM   #972
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Haha I'm just saying from experience, it's less stressful and much less anxiety when you have a backup car.

When I M112 Eaton Swapped my old V6 I was stressing so much when I would be able to get the car running, and thankfully my brother had a spare car I could use, but it was hell.
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Old 11-11-2014, 08:17 AM   #973
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Well, after looking through the datalog i have come across a few interesting findings. I'm going to be completely Objective here and just try to comment on what i see, not on what i think, to avoid any "rumor" or "speculation" or "he said - she said" nonsense.

For starters, when i open the log and look at the daily driving portion, i see Long Term Fuel Trims are anywhere from 1.14 - 1.25, which is obviously significantly more than ideal. "Ideal" Would be +/- 2%, with acceptable as far as +/- 8% ... 25% is just not good, but the recorded lambda is still a 1.0, so the car was keeping itself in check.

Typically switching to a blow through setup will make you run rich, all else equal, compared to a draw through set up. In my experiences its been as much as 10-15% as far as fuel trims are concerned... the fact that you switched to blow through and are running now up to 25% lean, again, as far as fuel trims are concerned, not AFR is what i find the most odd.


Fast forward to the WOT section and things start getting really interesting.
There is a consistent 6-8% difference in AFRs between your two banks, and this can be seen in the long and short term fuel trims as well, Bank 2 is always leaner.

It looks like you started from 1st gear in this log, went through 2nd, and when it wouldn't go into 3rd you let off? I'm assuming the car was spinning, because i see jumps in the RPM, and i also see the AFRs go incredibly rich, which is indicative of traction control (dumping fuel reduces torque).
- All of first gear, and until like 7200 rpm in second you were running, give or take, an 11.0 AFR in bank 1.
-Bank 2 was the same way until about 6800 rpm in 2nd, where it starts rapidly leaning out and ends up at at about a 13.6 AFR before it starts richening up again.

Looking at the fuel trims, it looks like the car was trying to target an 11.0 AFR (which i personally find too rich on E85, but whatever), but bank 2 was always more lean than bank 1. The spark looks fine, the car is adding spark, so the curve isnt too aggressive.

Honestly, it looks like you may have had a jacked injector since bank 2 was always leaner than bank1 ... The whole fueling schedule was jacked on this car though, so i could be off, the tuners do have the ability to adjust fuel per cylinder individually, but still. Connor swore up and down the MAF was the exact same size as stock, so unless the tuner leaned your car out 25% in the daily driving region, something somewhere isnt adding up.
... Is there any way you can measure the ID of the MAF housing for me? The fuel trims, the different AFR in the banks, the trims in blow through compared to draw through ... something somewhere is quite off. I'll still be spending a bit more time with this log, this is just my initial assessment, and by no means should i be considered an expert, i do this as a hobby, not for a living.
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Old 11-11-2014, 09:01 AM   #974
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Damn...so the car (according to the datalog) was running just fine...and cording little on the rich said more than lean but was other wise "safe"?


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let's just say the boost is addictive...
and I'm almost tempted to put the turbo on the replacement motor....
As I said... 3 engines...i blew 3 engines before. Now if you take this busted engine and build it then you have a DD and you can then take your time to install proper components. olua with the engine out of the car Installation will be easier and you will have an engine built for boost...and boy are you going to LOVE that **** lol.
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Old 11-11-2014, 09:08 AM   #975
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I would say go for it if you can find a competent tuner that you have 100% confidence in that will actually listen to lpf

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Or I could go to lpf :p

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Old 11-11-2014, 09:15 AM   #976
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Or I could go to lpf :p

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Make a a holiday of it...lol
However you choose to do it just for god sake do it right. No more discount tuners
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Old 11-11-2014, 09:43 AM   #977
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Damn...so the car (according to the datalog) was running just fine...and cording little on the rich said more than lean but was other wise "safe"?

The car never made it into 3rd, but the top of second leaned out to 13.6 at WOT, which is quite lean. If i had like a 3rd gear log i could really tell you whats going on, but its still hard to say. Right now my money is still on one of the injectors being busted, due to the AFR difference between the two banks, with the very limited knowledge i currently have of this situation.

The car was "running" fine, more or less, but the fueling logic, tune, hardparts ... something in that equation was quite off.
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Old 11-11-2014, 02:16 PM   #978
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The car never made it into 3rd, but the top of second leaned out to 13.6 at WOT, which is quite lean. If i had like a 3rd gear log i could really tell you whats going on, but its still hard to say. Right now my money is still on one of the injectors being busted, due to the AFR difference between the two banks, with the very limited knowledge i currently have of this situation.

The car was "running" fine, more or less, but the fueling logic, tune, hardparts ... something in that equation was quite off.
Guess we won't find out, because the car is stock now.

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---------- Post added at 02:16 PM ---------- Previous post was at 02:16 PM ----------

I have a 70% throttle log I could send you, if the would help

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Old 11-11-2014, 05:31 PM   #979
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Just a note to add my two cents. I have a twin turbo 3.7 that has been driven for the past 18 months with no problems. I read in some of the posts that the MAF tune did not need to be changed. This is absolutely wrong. The MAF, depending on location, is critical to the tune. If it is located close to the stock location it cannot read the amount of air being pushed through the charge pipe. Mine is located in the intercooler and the tune was changed alot to make it work.
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Old 11-11-2014, 06:07 PM   #980
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Just a note to add my two cents. I have a twin turbo 3.7 that has been driven for the past 18 months with no problems. I read in some of the posts that the MAF tune did not need to be changed. This is absolutely wrong. The MAF, depending on location, is critical to the tune. If it is located close to the stock location it cannot read the amount of air being pushed through the charge pipe. Mine is located in the intercooler and the tune was changed alot to make it work.
Why haven't you started a build thread bro? Im sure many people would be interested in a twin turbo 3.7 that hasn't blown. Start a new thread and let us see it!
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