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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...

Thanx for the responses! I will experiment and let you know what I find. Unfortunately, the car isn't drivable at the moment to get it to an exhaust analyzer, but I will try that once I can drive it again (suspension apart). If I understand correctly, some are suggesting that I reduce the...

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 Craig, Just to clear it up for me what you said above, let's see if I have this right: There are 16 distinct interpolation points between adjacent cells on the VE table. Is this in both x (rpm) and y (MAP) directions? Is the interpolation purely linear? And it's really not quite...

New pump is in! Well, I have the new fuel pump in. The good news is it appears to be doing the trick to keep my pressure up! I haven't put it back on the dyno, but I was extremely rich on my first log run. I leaned things out, and now I can pretty much set the desired VE and AF and it attempts...

Chuck, You would probably hate my fuel system then... :) I wish I had done more along the lines of what you suggested originally, but I didn't. I have an in-tank pump (that is supposed to be a Holley unit, but I don't know for sure). I'm running an inline filter between the pump and the...

Bob, Thanx for the response. I understand everything you said, but maybe I didn't ask the correct question. When the ECU is doing O2 correction, it takes a LOT of time it seems for the correction to go away. As an example, if you look at my log, you see a huge spike when the throttle is...

Chris, The motor is in my 1970 Camaro. Here's the web page: The Hunk o' Metal The duty cycle went way up because of losing fuel pressure (I have another post talking about that, sorry I didn't mention it again). I'm down to about 20psi above 5500 or so. :( So I'm fuel pump shopping at...

Engine specs Small Block Chevy, 377ci, big bore motor. Solid roller cam (252/268, .672/.672, 114ls). Canfield aluminum heads (227cc intake ports, 2.100" intake valves, 1.600" exhaust valves, 306cfm intake port, 215cfm exhaust port at .700" lift). I'm running an Edelbrock Victor Jr. intake...

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...

Follow-up Hi guys, Well, I made it to the dyno today. And unfortunately, I saw pretty much what I expected to see... At about 5000 rpm, my fuel pressure dropped off like a brick. It went from about 45psi to about 20psi where it stayed until the end of the run. Hmm... Not good. The ECU...

One fear that I have is that my fuel pump or lines may be too small... I'm headed to a chassis dyno tomorrow to watch the fuel pressure (gauge in the engine compartment) which I go through the RPM's. If I see a fuel pressure drop, then I get to start looking for problems... I haven't watched...

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...

Bob, My thinking was that the piston tops were so wet that carbon was washed off. I seem to have such a strong gas smell when the motor is running also, even though the Dashboard shows my requested AFR (about 13.8) at idle. There are no cats on the car, so I realize I'm going to have some...

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...

Follow-up... Ok, I thought I would let you guys know I found the problem, and I'm feeling pretty stupid for it... :-( Apparantly I must have dropped a couple of my spark plugs when I pulled them out, and I didn't think to regap them before reinstalling. Of course, one was completely closed...

Chuck, The engine was just rebuild last week. The pistons went in the holes on Thursday, and the motor was fired for the first time on Friday. :) The motor was running fine before tearing it down. The only reason I did so was because of oil smoke during decel. As for the timing, that's...

I have... :) I edit my timing table whenever I set the timing so that I have a fixed value across all entries. I also zero out the timing trim for idle so it's not messing with the timing. So, right now, I have the entire table set to 20 degrees with 0 degrees timing trim. I adjust the...