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Old 10-01-2010, 11:12 PM   #51
fourseasonsandles
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Member#: 94816
Join Date: Aug 2005
Chapter/Region: Tri-State
Vehicle:
06 STI EFI Tuned
Rspc block, GT30, 272s

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Quote:
Originally Posted by woodys77 View Post
I finally found my problem it was a bad deatschwerks injector. just put a long screwdriver on each injector while th Car is running and listen threw the handle, i had 3 injectors that went click click click and 1 that went clunk clunk clunk.
I checked mine earlier and they all click click as far as I could tell..

Cleaned the MAF. That helped a little, but still freaking out under boost. Im done for now.

I just triple checked my injectors and all 4 def click click click. I wonder if there is something up with the FPR.
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Last edited by fourseasonsandles; 10-01-2010 at 11:20 PM.
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Old 10-02-2010, 12:52 AM   #52
shutupnshift04
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Location: Jersey. not shore.
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BOSS

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Did you properly gap the spark plugs? the boost might be blowing the spark out..try tighter clearences. If your POSITIVE and i mean absolutly positive its not a boost leak then check the timing belt also make sure cams are properly degreed
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Old 10-06-2010, 12:09 PM   #53
fourseasonsandles
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Join Date: Aug 2005
Chapter/Region: Tri-State
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06 STI EFI Tuned
Rspc block, GT30, 272s

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Originally Posted by shutupnshift04 View Post
Did you properly gap the spark plugs? the boost might be blowing the spark out..try tighter clearences. If your POSITIVE and i mean absolutly positive its not a boost leak then check the timing belt also make sure cams are properly degreed
Took the car to EFI yesterday and turned out the car hates the copper spark plugs. I have been running these same NGK LFR6A-11 copper plugs since I started modding. It is what Innovative tuning recommends for modding.

I swapped coil packs and plugs and made no difference when I was trouble shooting, but I still used the same copper plug. Chris at EFI put in some NGK Iridum plugs and did some tuning work and the hesitation is gone. There are absolutely no exhaust of intake leaks and the timing is right on.
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Old 10-06-2010, 01:31 PM   #54
Nickcrsx
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Quote:
Originally Posted by fourseasonsandles View Post
Took the car to EFI yesterday and turned out the car hates the copper spark plugs. I have been running these same NGK LFR6A-11 copper plugs since I started modding. It is what Innovative tuning recommends for modding.

I swapped coil packs and plugs and made no difference when I was trouble shooting, but I still used the same copper plug. Chris at EFI put in some NGK Iridum plugs and did some tuning work and the hesitation is gone. There are absolutely no exhaust of intake leaks and the timing is right on.
Interesting.

Mike used these plugs on my car. I threw them into the built motor for tuning and I had the same issue. I suggest Innovative stops using these.
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Old 10-06-2010, 01:53 PM   #55
fourseasonsandles
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Join Date: Aug 2005
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06 STI EFI Tuned
Rspc block, GT30, 272s

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Quote:
Originally Posted by Nickcrsx View Post
Interesting.

Mike used these plugs on my car. I threw them into the built motor for tuning and I had the same issue. I suggest Innovative stops using these.
FWIW, my car has been tuned multiple times by Mike at Innovative. Ever since my first Stage 2 set up with headers, I have always used these plugs. I never noticed a hesitation on the stock turbo set up. It wasnt until I went from a 65mm APS CAI to Mike's suggestion of an 83mm KSTech Mega MAF and the ATP3076r set up did I have hesitation. Always used the same NGK copper plugs.

Another local guy had a 2006 set up with a 70mm APS CAI and an FP Green on a built block and had the same exact hesitation issue that I had. I brought the issue to Mike and he couldnt sort it out via tuning. He thought the front o2 was the problem. I replaced that and it was still there. He was also never able to sort out my other friends STI before he was tired of dealing with it and sold the car.

After replacing the stock block, same turbo set up, dropped to a 73mm KS Tech CAI and some head work, I had the same hesitation issues. Again using the NGK copper plugs.

After swapping plugs yesterday and some tuning, the issue is gone. However, I havent been able to drive the car yet as EFI is working on another unrelated boost issue with my turbo. Chris worked for about 4-5 hours on my car trouble shooting and then finally getting rid of the hesitation.

But yep, appears to be the copper plugs were the problem.
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Old 10-06-2010, 01:57 PM   #56
Daniel's05WRX
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2005 WRX Hybrid
Crystal Grey Mettalic

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crazy... i had a similar problem a few years ago after changing spark plugs... car ran great until u hit boost then it would shutter... turned out to be a cracked spark plug...
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Old 10-07-2010, 05:22 PM   #57
woodys77
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2007 STI EfiLogics
422whp 421wtq fpgreen

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Im glad you guys found it..... i wish mine was that easy.
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