Search results

Hoping someone can help out. How is AF determined after warmup? Is it just from the Fueling Table? The problem I'm having is that after installing the SC (same MAF same injectors) my A/F is richer than it was N/A. Also, turning on the A/C sends the A/F richer too. According to my Fueling Table...

I have a question about the transfer function provided with the FRPP 90MM LMAF. I recently removed my supercharger and put the stock injectors and MAF back on. I re-tuned for NA and everything ran great. Then I installed FRPP 60lb injectors, retuned and still everything was fine. Then I...

I'm thinking about changing from my current draw through setup; 90mm MAF, Vortech SC, aftercooler, to a blow though setup using a stock 05-10 MAF mounted the discharge tube between the aftercooler and TB. The MAF will be about 6 inches from the TB and 8 from the cooler. The discharge has...

I've been chasing an idle issue around for a long time. I removed the Comp Cams XE270's and put the stock cams back in. The idle issue is still there, but it doesn't stall. This allowed me to duplicate the problem and data log it. Here is part of the problem. From idle, if I blip the throttle...

I'm having a problem were the engine rpm decreases with the dashpot down to 1000 rpm or so, then pops up for a split second before "dropping" into the idle. After that the engine will either "lock" into a steady idle or hunt/stall. I've data logged the IAC duty cycle and it never goes below 25%...

I looked at a Mystichrome Cobra this weekend located at Hall Ford, Newport New VA. The car is nice, but the fit and finish seemed off. For example the rear bumper body lines didn't line up quite right below the taillights, the door sill gap was greater at the back of the door than the front, the...

Looking for an 8mm Pivot Pin upgrade fixture.

I'm chasing an idle problem. The car idled fine before the last round of modifications. Then I added long tube headers, camshafts, and upgraded the fuel system to dual FPDMs and dual GT pumps. Since then the car has never idle quite right. (Driving is fine and it makes good power) The idle will...

I just about have the idle issue figured out, but I've noticed that when I apply and brakes and/or turn the wheel the RPMs drop. Both run off the hydroboost system. There is a table that adds RPM/IAC based on pressure, but I don't see a powersteering pressure variable to datalog and I'm not even...

I need some help with dialing in my idle tune. The setup is fairly common. Vortech supercharged with Comp Cams XE270 cams. The engine will idle fine once idling, but the transition to idle is the problem. When coming to a stop the idle will drop to 900-1000 and hang for a second or two...

Just a quick introduction. I have a 2001 Bullitt with a Vortech pushing 11 psi of boost into a stock long block with MHS Stage I blower cams. Since the car was retuned three years ago I've chased an idling problem where the car will run rich at idle and anytime the oxygen sensors are not warmed...