Fuel Cut with MAFT

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oldschool85

1fstmk2
Mar 30, 2005
82
0
6
37
Denver, PA
hello everyone. Im running the maft in blow through mode at the moment. The problem is im only boosting 8-9lbs and im hitting fuel cut. Code 34.

I even have the aux setting to 4 for 1500HZ. I just dont know why it could be doing this. The turbo is stock @8-9lbs, FMIC, walbro, maft, safc untuned, afpr set to 40PSI hose off, 2.5hardpipes, 3inch dp and 3inch exhaust, greddy type s BOV if that matters. Thats about all the mods i have on the 7m.

Help Anyone.
Charlie
 
IHI-RHC7

IHI-RHC7

"The Boss"
Apr 1, 2005
1,310
0
0
40
Oregon
Did you set the MAFT so that when cruising your Vf is at 2.5?
I run in suck through, and have hit 21.5 psi and never hit FC...
 
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oldschool85

1fstmk2
Mar 30, 2005
82
0
6
37
Denver, PA
yes im starting to think i have a boost leak somewhere. Its probably very minor. Maybe something is slipping under WOT causing air to escape. Will report back soon. Thanks guys.

charlie
 
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oldschool85

1fstmk2
Mar 30, 2005
82
0
6
37
Denver, PA
just for reference how high is everyone reaching on there KS signal? ive gotten as high as 1492 HZ.

Found my leak, just gotta weld some beads on to it this time around and strap it good with the tbolt.

charlie
 
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oldschool85

1fstmk2
Mar 30, 2005
82
0
6
37
Denver, PA
ok just when i thought it was the pipes not having beads on them, it was the greddy type s all along. Mother fucker leaks under boost. Tightened it abit and it seems to hold 9lbs fine. Looks liek the hks bypass valve will be up on the list next.

charlie
 
aye mate

aye mate

Hiatus over.
Mar 30, 2005
1,926
0
0
Maryland
oldschool85 said:
ok just when i thought it was the pipes not having beads on them, it was the greddy type s all along. Mother fucker leaks under boost. Tightened it abit and it seems to hold 9lbs fine. Looks liek the hks bypass valve will be up on the list next.

charlie
Click to expand...
Save yourslef some money and get a Porsche spec Bosch valve.
 
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