View Single Post
Old 09-18-2005, 07:39 PM   #123 (permalink)
TurboBob
Resident mad scientist
 
TurboBob's Avatar
 
Join Date: Jan 2003
Location: Near Detroit
Drives: 86 GN 91 RT/TT
Trader Rating: (14)
TurboBob is an unknown quantity at this point
Default Re: ---===The Official MAFT-Pro Thread===---

Quote:
Originally Posted by KILURV8
Allright, i got all installed and the car runs under speed density but I have some questions.

First one, my car seems slow to respond when I lightly push the accelerator. Also when the car does start to get gas it doesn't come on very gentle. Are there any settings to help this?

Second one, my car almost wants to die if you push the clutch at like 4K and let the rpms drop. Is there any sort of decel setting or a slightly raised rpm if the car isn't at 0 mph.

Third and the most important, when driveing the car off boost and just lightly accelerating, right at 4600+ RPM the car goes super lean like 20:1 afr and I have already added in like 15% of fuel to try to allevate the problem with no success. This concerns me a ton. Did I happen to miss a setting? I am sure I will have a million more questions soon.

The tip-in stuff is the TPS1 and TPS2 parameters, try increasing the TPS1 and see if the response improves. You need to have the idle and low throttle ranges tuned first, and tune the response last. Adding a few % to the mid load page, at 800 rpm and 1200 rpm can help the tip in as well.

For the decel stuff, watch the STFT (short term fuel trim) and see if its lean, also let me know what the LTFTs are doing.

On the high RPM stuff, where are you "adding fuel"? (which setting) What are your trims doing when this happens?

Bob
__________________
Need a datalogger? Check out the Scanmaster 3
PM me about ECU mods for 8000+ RPM rev limits !!!!!!!!
Stock = 7300 RPM
Stage 1 = 8060 RPM
Stage 2 = 8200 RPM
Stage 3 = 8400 RPM
Stage 4 = 8800 RPM (By request only)

1991 Stealth RT/TT, Grooms Shortblock, 13G's, Translator Pro, www.maftpro.com
My Stealth is for sale, 65000 miles, runs perfectly. $8K

TurboBob is offline   Reply With Quote