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Old 07-04-2013, 04:26 PM   #1
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Odd noise and RPM issues.

Alright this could be pretty lengthy but i hope you guys are able to help. First off i did contact the BAMA team but being july 4th they wont reply til tomorrow. Ive got a 96 GT with minor mods. Plenum, mac CAI, x pipe and lm1s with a bama tune.
I previously had a k&n intake, but swapped out today actually for the mac.
With a strategy tune on and having only changed to 93 octane and rear o2s off with the k&n intake, this is my car and how it was:

http://youtu.be/HMKB7Ffn3f4

I swapped intakes and started it up, ran just like in that video and the 30 min drive home was fine. Right when i got home tho, this is how it was:

http://youtu.be/GZgMeEQEfeY

As you can tell the RPMs hang more and it almost shut off once they dropped back down.
Also, does anyone know what that noise could be that you hear around 2100-2200 RPMs?

Anyways i took the tune off immediately and this is how it is currently:

http://youtu.be/8VByf1bvhiQ

How it normally ran before any tunes were applied.

So what could be the deal? I strategy tuned it, i didnt apply a tune they custom made so thats why i wouldnt think it was the tune. But what do i know lol. Any insight or help is greatly appreciated.
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Old 07-04-2013, 05:54 PM   #2
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Ok for starters when u had the k&n cai it went into a fender well or did it have like a small box? When u swap an intake it will do that since a cai and a ram cai( which is what the mac is) have different parameters and tunes. It makes a big difference. If you were to apply a tune yourself from the tuner manually i would suggest using a ram intake instead of the cai on the tuner. As to the hanging rpms it may be the iac acting up due to its getting much more air from the mac. Post some pics of both intakes to get an idea. This is my mac ibtake on my 96

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1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 07-04-2013, 05:56 PM   #3
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Originally Posted by 1996mustang View Post
Ok for starters when u had the k&n cai it went into a fender well or did it have like a small box? When u swap an intake it will do that since a cai and a ram cai( which is what the mac is) have different parameters and tunes. It makes a big difference. If you were to apply a tune yourself from the tuner manually i would suggest using a ram intake instead of the cai on the tuner. As to the hanging rpms it may be the iac acting up due to its getting much more air from the mac. Post some pics of both intakes to get an idea. This is my mac ibtake on my 96
My bad. It was a RAM intake before and now its a fenderwell. Ill get a complete new tune made for it then.
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Old 07-04-2013, 05:58 PM   #4
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Originally Posted by 96smoke View Post

My bad. It was a RAM intake before and now its a fenderwell. Ill get a complete new tune made for it then.
No problem we all here to help any way we can let us knoe if the new tune fixes your issue
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1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 07-04-2013, 06:05 PM   #5
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No problem we all here to help any way we can let us knoe if the new tune fixes your issue
Definitely! Do you have any idea what that noise is in the second video around 2100rpms?
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Old 07-04-2013, 06:17 PM   #6
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Originally Posted by 96smoke View Post

Definitely! Do you have any idea what that noise is in the second video around 2100rpms?
Ill take a second look at it on my laptop since my phone does no justice lol but when i do i will say my thoughts on that aspect
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o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 07-05-2013, 08:41 AM   #7
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Heres both pics you asked for
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Old 07-05-2013, 09:21 AM   #8
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Yeah switching from ram to cai does a big difference in the tune. Cai has specific air temps and flow that differs from ram so that would definitely be a big factor for the car acting different.
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o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 07-05-2013, 09:32 AM   #9
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As to the noise it only happened when u swapped out intakes my guess its the iac trying to adjust to the new parameters. If it didnt do it before until u swapped intakes its possible iac trying to adjust to idle car but couldnt due to using the mac
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1996 Mustang GT, 17x9 front and 17x10.5 cobra r replica rims, 255/40/17 front 285/40/17 rear at the moment,
o/r x-pipe flow master 40 series dump downs, cai/ram intake, 75mm c&l throttle body and plenum, pi heads and intake swap, msd wires, stock gears, untuned at the moment, no dyno numbers for now.
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Old 07-05-2013, 09:43 AM   #10
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Originally Posted by 1996mustang View Post
As to the noise it only happened when u swapped out intakes my guess its the iac trying to adjust to the new parameters. If it didnt do it before until u swapped intakes its possible iac trying to adjust to idle car but couldnt due to using the mac
Yea i retuned it and its no longer havin that issue! And thats for that info, learn somethin new everyday lol
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Old 07-05-2013, 10:37 AM   #11
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Quote:
Originally Posted by 96smoke View Post
Alright this could be pretty lengthy but i hope you guys are able to help. First off i did contact the BAMA team but being july 4th they wont reply til tomorrow. Ive got a 96 GT with minor mods. Plenum, mac CAI, x pipe and lm1s with a bama tune.
I previously had a k&n intake, but swapped out today actually for the mac.
With a strategy tune on and having only changed to 93 octane and rear o2s off with the k&n intake, this is my car and how it was:

96 gt rpm issue - YouTube

I swapped intakes and started it up, ran just like in that video and the 30 min drive home was fine. Right when i got home tho, this is how it was:

96 gt again. - YouTube

As you can tell the RPMs hang more and it almost shut off once they dropped back down.
Also, does anyone know what that noise could be that you hear around 2100-2200 RPMs?

Anyways i took the tune off immediately and this is how it is currently:

96 gt 3 - YouTube

How it normally ran before any tunes were applied.

So what could be the deal? I strategy tuned it, i didnt apply a tune they custom made so thats why i wouldnt think it was the tune. But what do i know lol. Any insight or help is greatly appreciated.
Quote:
Originally Posted by 96smoke View Post
Yea i retuned it and its no longer havin that issue! And thats for that info, learn somethin new everyday lol
I'm glad to hear you got it all figured out. Changing intakes doesn't always change to much, but if it flows more air and pulls in cooler air from a different location, we recommend a new tune! So give the Bama team a call and they'll gladly answer any questions you may have.

Our Bama Performance tuning specialists are here in the building Monday-Friday from 9AM-5:30PM EST and Saturday 9AM-5:30PM EST. You can hit them up directly at 888.226.9764 and they'll get you squared away!

I hope this helps! Please let me know if you have any questions or need some assistance in the near future.

-Dan
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