frustrated 50#

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biggiedave

New member
hi all cant seem to get a good idle mods are 1999 block, stock intake 50# msd's stock cam, headers no cat,970 cfm turbo, brodix 208/160 alum angled plug heads , ext wastgate and headache from rich fuel. i have been adjusting the 040xad table to lean it up currently have it in the 18's to 2000 rpm , is this the best place to adjust it? oh and btw running b8e6 ngk's at 30.
thanks
 
JSM

JSM

Active member
I am suspecting those heads won't even idle right. Just a quick glance looks to me like to big of head on too small of combo.

Just my opinion though.
 
JSM

JSM

Active member
just because the heads flow big numbers, doesn't necc. mean that is good.

You have stock cam (VERY little lift), and brodix heads are actually going to flow like crap at low lift. Flow is kindof like horsepower, not always the biggest peak wins. It is the AREA under the curve and the whole picture.

Of course the brodix guy is going to suggest his stuff.
 
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smeagol

Active member
Um, where do we start..

Adjust F28 to get the fuel curve down for the 50s (use 30/50 ratio for a start)

Adjust the F29 tables for idle & driveability

Adjust the AE tables to get part throttle right

Adjust the DE tables to get your deceleration right

I'd run it in full time quasi-asynch mode

you running off a 3 bar or 2 bar program?

Have you set the program ID to AA when you modified your programs?
 
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smeagol

Active member
I can't see why you'd be running that setup on the stock cam.

My thoughts exactly.

If you aren't either:

a)skilled in tuning EFI stuff via chips/aftermarket computers

or

b)wealthy

You are best off copying proven buildups. I can understand going your own way and doing things differently, but like I once heard, pioneers are people with arrows in their backs :wink:
 
jwaller

jwaller

Evil Genius/SyTy Guru
do you really believe that....who gives a flip? :grin:....no seriously it looks stock. It couldnt be larger than a 20g. there is no adaptor plate or anything between the center section and compressor houising.
 
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biggiedave

New member
yes stock housing on turbo, cold side gutted shaved and custom built by forced performance forcedperformance.net it flows at 970 cfm the inlet is 3 1/4 inches wide
 
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