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Hi guys, Ok, I'm stuck and need a little help... I have the car running well at all times, except when I start it cold! It will start, but it will stall almost immediately unless I feather the throttle for about 2-3 seconds... When it's really cold, as it is now (20-30 degrees outside), it...

Hi guys, I've posted here before, so many know that I already have a running motor. However, I am considering some changes, and a post in another thread got me thinking about this option... I currently have a 377ci SBC, solid roller cam, large Canfield heads, and an Edelbrock Victor Jr...

I have a question. Reading another post made me think of this... As I understand it, the advantage of a sequential fire FAST (or any EFI system) vs. a Batch fire system is the injector being fired timed to the cam timing. However, as was pointed out earlier in the other post, it's very...

Hi guys, Every since I've had my car running, I've thought the car ran and smelled rich. I've played with all the settings in my FAST setup, but I'm still convinced it's rich for some reason! If I'm standing in the garage and have the car running for 5 minutes, I walk into the house and I...

Hi guys, Me again. Today I made 4 dyno pulls. After each, I was playing with a few things trying to make the engine better. I adjusted timing a little, and fuel too... Now I'm going back to look at the log files, and I'm wondering if anyone can shed some insight on how to use them. I imagine...

Hi guys, This may be a naive question, but that's ok... I'm still learning. :) I'm starting to finally tune my motor for WOT, and I'm finding myself adding more and more fuel. I've been as high as 120 in some VE entries in the FAST tables. And it's still reporting lean in those areas...

Hi guys, Can anyone tell me if there is a conclusive way to know if my O2 sensor is bad? I seem to be having an overly rich problem that I can't solve. I've leaned things out quite a bit, but it's still rich. I just pulled the cylinder heads (another rebuild, joy...) and the piston tops...

Hi guys, I'm having a problem after just rebuilding the motor that doesn't make a lot of sense to me. I'm getting a LOT of exhaust popping now, and I don't know why... The engine is the same other than some new bearings and rings. :) I've made some slight adjustments to the FAST program...

Hi guys, Here's my second question, and it might be related to the first that I just posted. When I let the engine sit for a long time idling, it seems to load up and then wanted to backfire when I start driving again. After it backfires, it runs fine. Since I've set my IDLE area VE...

Hi guys, Ok, I'm back with another FAST question. Things are going better, but this one has me a little baffled. I've been struggling with my cold vs. warm idle VE settings. If I get the car warmed up and set the VE entries to match my desired AFR numbers (about 13.6:1 at IDLE), it idles...

Hi guys, Well, in all my struggles to get the SBC up and running, I purchased an extra throttle body for diagnosis. Now, I have one that I would like to sell. If you are putting together your own EFI setup, this might be for you! :) This is a 4150-base 1130cfm throttle body. It has a GM...

Hi guys, So I'm making progress with the FAST tuning. But as usual, I have a question. When I'm driving along and come up to a stop, I'll generally engine brake the car by leaving it in gear, then press in the clutch right before stopping. Well, for some reason when I do this, the engine...

I have an idle question (again). When I start my motor, cold OR hot, for a period of time after starting, the idle will not stabilize. Often times I have to tap the pedal a few times to keep it alive, and once it will run on its own, it will 'hunt' for the correct RPM. However, as soon as it...

Ok, how was that subject for confusing things?! :) Here's the problem... When I first go into the garage and try to start the motor, it will spin, and spin, and spin...... Hitting the throttle doesn't seem to help things either. I don't think it's ever started the first time I throw the...

Hi guys, First, I'm going to post this question in a few places, so if you see it more than once, I appologize! In my quest to get my motor tuned, I started data logging yesterday. I collected a lot of information, and now I have to decipher it. The FAST documentation doesn't explain what...

Hi guys, I want to change the injector harness on my FAST system to move the connector to the rear of the intake to hide it better. I've seen the reordering instructions in the FAST manual, but it doesn't tell me how to get the pins out of the injector harness connector. I've tried a few...

Can anyone tell me if there is a way to reset the IAC on a FAST system? I'm told, by friend who use the GM ECU's, that there are ways to force the IAC to reset in case it somehow gets 'off'. For example, with the TPI system, there is a sequence you can go through to force it closed, and then the...

Ok guys... Need some help (again!). I'm having a really hard time getting my engine to start when cold or warm. So, I obviously need to adjust something, just not exactly sure what... The symptom is the motor spins and spins, coughs and tries to start (ie: starts somewhat firing and rpms...

Lance/Craig, or anyone who knows... How are updates to the C-Com Windows software going to be handled? I ask because I think you could get free updates as they were available for the DOS version from the website. However, since you have to pay for the Windows version, I presume there isn't an...

Hi guys... I'm trying to get my tuning on my SBC dialed in a little better. I'm having some idle issues that I hope you guys can help me out with. I've been having this discussion at another board also, but I'm looking for a good cross section of advice! :) As a quick recap, I have a...