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Old 07-22-2012, 06:29 PM   #1
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Paxton 2200SL installed

Just finished installing my tuner kit with Jon Lund tune and Injector Dynamics 1000s today. Going to install the boost regulated BAP next weekend but had a couple questions. What are the best spark plugs to use with F/I? I know Paxton says to stay away from platinum's. Also I have had spark blowout under boost in a previous car and I am experiencing those symptoms at top end right now and was wondering if running out of fuel would have the same symptoms or would I just run lean?
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Old 07-22-2012, 07:02 PM   #2
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Doesn't answer your question, but how does the centri feel so far?
Sounds like running lean to me...hard to say w/o datalogs.
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Old 07-22-2012, 07:04 PM   #3
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Re: Paxton 2200SL installed

It sounds and feels great, definitely feels and sounds like spark blowout, still have stockers on with a little over 12k miles on them.
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Old 07-22-2012, 08:09 PM   #4
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Re: Paxton 2200SL installed

would different heat range plug make a difference for this? also what do you mean by spark plug blowout?
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Old 07-22-2012, 08:19 PM   #5
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Just realized I didn't gap my plugs to .35. Still at factory gap. Going to try that before ordering new plugs. From my understanding spark plug blowout occurs mostly with boosted applications where it can actually blow out the spark at high rpm/ boost which decreasing the plug gap takes care of.
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Old 07-22-2012, 08:25 PM   #6
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Are u running a wide band and what psi are u at. I would assume oem temp spark plugs would be okay as long as boost aint that high.

---------- Post added at 06:25 PM ---------- Previous post was at 06:22 PM ----------

Quote:
Originally Posted by GrabberBlue5.0
would different heat range plug make a difference for this? also what do you mean by spark plug blowout?
Spark plug blow out is a older car problem I.e.. 04-08 f159s had 3 threads where the plug was in the head. Cases had happen where the plug and the threads was blew out the head, spark blow is blowing the fire out of the plug of that makes sense
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Old 07-22-2012, 08:26 PM   #7
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Waiting on Aeroforce gauge/ boost adapter and I am running stock pulley but with an open cai type filter so it should be between 8-9 lbs of boost. Stock plugs should be fine as long as they aren't fouled and I re-gap them.

---------- Post added at 09:26 PM ---------- Previous post was at 09:25 PM ----------

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Are u running a wide band and what psi are u at. I would assume oem temp spark plugs would be okay as long as boost aint that high.

---------- Post added at 06:25 PM ---------- Previous post was at 06:22 PM ----------



Spark plug blow out is a older car problem I.e.. 04-08 f159s had 3 threads where the plug was in the head. Cases had happen where the plug and the threads was blew out the head, spark blow is blowing the fire out of the plug of that makes sense
I was referring to the spark itself being blown out due to the large gap size and boosted application.
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Old 07-22-2012, 08:35 PM   #8
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Re: Paxton 2200SL installed

Quote:
Originally Posted by Stang.racr View Post
Spark plug blow out is a older car problem I.e.. 04-08 f159s had 3 threads where the plug was in the head. Cases had happen where the plug and the threads was blew out the head, spark blow is blowing the fire out of the plug of that makes sense
this is what I had in mind, I know that alot of the old 5.4 trucks had this problem

---------- Post added at 09:35 PM ---------- Previous post was at 09:34 PM ----------

gapping may help, can't say for sure. sounds like it should from what you say though
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Old 07-23-2012, 09:04 AM   #9
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Re: Paxton 2200SL installed

I bet your EGT's wouldn't mind a step colder plug. I'm coming from the suby/evo group though. It was common to run a step colder plug when running higher boost.
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Old 07-23-2012, 01:41 PM   #10
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Re: Paxton 2200SL installed

Well took care of the spark blow out issue but now the car is falling on its face right after a quick shift at WOT. Going to data log and send it to Jon Lund and see whats going on.
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Old 07-23-2012, 01:53 PM   #11
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Sucks man, keep us updated
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Old 07-24-2012, 10:31 AM   #12
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Re: Paxton 2200SL installed

come to find out I was a little misinformed, the base tune I was sent was not meant for anything but cruising and idling until further adjustments were made. Waiting on the new tune file will keep updated.
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