I'm lost, I know my way around the TBI system enough to keep it running if a problem occurs, but any kind of modification apparently sends the...

If you make the regulator adjustable by removing the weld, and you keep the stock spring, what kind of pressure is possible if you have a pump...

I have seen this information on here before, but I can't find it now. I went through all the links in the FAQ thread, but it's not in there. (There...

Hi everyone,I've got a 1997 Blazer with a 4.3 (Vin W) and 4l60e, everything is stock. I've gone through and repinned my existing harness for a P59...

I've got a problem with my 350 TBI that I'm hoping someone can give me advice on. It's freshly built with new lifters, push rods, valves, the whole...

My car recently began running rough at low RPM when on the throttle. I can duplicate the problem most anytime when RPM is below 2000. Give it some...

Hi Everyone, I have been chasing down a idle hunting problem recently. My issue is that in park/neutral the engine idle will hunt for the a stable...

I know I've seen a list of pump numbers and the specs for same, but I can't find it now, can someone please point me in the right direction? ...

Hello, I recently did the MPFI conversion on my 89 gmc c3500 7.4l. The idle and open throttle VE tables are in the high 13's - low 14's in the lower...

So...... Can anyone explain how the factory type 2 Wire OBD1 style VSS is supposed to work? For instance a 700-R4 with electric VSS has a 40 Count...

Trying to wrap my head around two timing tables. In the past with mechanical distributers I've always set the max centrifugal advance to max out at...

How restrictive is this spacer? Does it actually cause a restriction in the airflow through the throttle body, or does it not really have any effect...

I've read on another site that you can do some physical modifications to your throttle body to improve airflow, such as removing the lip at the top...

I've always been under the assumption that this truck used a kickdown switch to downshift the transmission to 2nd, but after rewiring the relays for...

Hi all, Cadman-iac here. Just wanted to introduce myself and get started. Been wrenching for near 50 years. Got an issue with my 88 Burb with the...

Hello everyone, I'm a new guy here but not new to tuning. I enjoy performance builds on both diesels and gas engines. Also, tuning on semi trucks,...

I have a question for the gurus here. It's been mentioned that you have to have a prom from your current ECM or one similar. Are the proms...

Hello, I am looking forward to participating in this forum. There is a tremendous amount of valuable information and expertise here. My project is a...

I have a 2000 S10 with a stock 2.2 vin 4 and automatic transmission My PCM is 16228016 with os id 9383076... I need to turn off VATS, but I cant find...

looking for some ideas on why my 94 Lt1 would pop out the exhaust at around 2500 rpm when you ease on the gas. but if you just rev it past 2500 all...

I have been trying to figure out for a while, is there any engine parameter that are different between a stock manual and stock auto calibration...

I have a 96 ecu here lost power when they were programming. Found Goldsswagon post but did not see what file needs to be put in both T & E chips?...

I've been going through a lot of threads here, and I think I know the answer to this but would like verification. A 3 wire is a narrow band heated...

Hi there, I’m new to this forum infact this is my first forum post anywhere. I’m here to learn about tuning and burning chips. My everyday driver is...

Hey do Any one have a xdf for 2003 avalanche 5.3 for tuner pro And any pointers to tuninge cam to get the truck started in tuner pro

Having issues with my DBW throttle pedal where the TB opens to 100% with around half of the pedal motion, seems like the scaling of something is...

New to tuning and have been searching on several posts. What number do you use to look up the XDF file? I see OS ID, Calibration ID, Hardware ID,...

I cannot open pages below BCC on forum home.

Does anyone on here have a tuned bin for their drive by cable 99-02 cammed 5.3? If so I'd very much appreciate getting a copy of it! and also what...

Hello, just started a 1993 454 TBI / 4L80e swap into a 1980 square body K30. I found this site through searching about ecm’s and wiring harnesses. ...