Odd question

Topic: Odd question (Read 4551 times) previous topic - next topic

Reply #15 – August 02, 2016, 04:03:40 PM

You can run GT40 heads and stay speed density, but if you go with any other cam than a stock HO, you must convert to MAF. A couple guys here are running others speed density, but reportedly, selection is critically important. You must have 19# injectors for any HO speed density EEC, anything larger and you MUST convert to MAF and either run a calibrated unit or get a chip with a tune. Post a wanted thread in the marketplace, these guys here will have what you need.

Odd question

Reply #16 – August 02, 2016, 04:17:22 PM

thank you sir!! you have been very helpful, i almost gave up on the fuel infection and went to carb set up. but with all your guys help i should be fine. will post a add, thanks again
shad.

Odd question

Reply #17 – August 02, 2016, 04:48:06 PM

Try this first: http://sbftech.com/index.php/topic,1031.0.html

It should at least idle ok with just an intake swap. You're SURE there are no vacuum leaks correct?

Odd question

Reply #18 – August 02, 2016, 05:17:46 PM

positive, all new gaskets and vaspoogem lines, plus i checked for leaks, found none.

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Reply #19 – August 02, 2016, 05:23:29 PM

It doesnt have the problem all the time, drove today ran fine, thats why i thinking everybody is correct in the fact its running to lean,and ive maxed the the factory speed density ecm and 14lb injectors.

Odd question

Reply #20 – October 21, 2016, 12:01:58 AM

How would it have idle problems and run lean AT IDLE from adding an intake manifold (which is THE biggest bottleneck out of all the stock parts whether SO or HO) and a set of headers? For
it to lean out at idle, you would have to add enough air to where the PCM could not compensate for the change; something that would be shown when checking for codes. The specific code would be "Adaptive Fuel Lean limit reached". Code 85. If you've driven the car around and put it under load and not seen it; chances are even less you'll see it at idle (meaning ZERO chance).

You have a vacuum leak. It's a minor one. I wouldn't be at all surprised if it was the shaft seals on the throttle body.

FWIW -- 14 pound injectors would probably handle close to 200 HP at the stock pressure PROVIDED THERE IS ENOUGH FUEL PUMP TO FEED THEM. If you do find a fuel issue with the combo you described, look at the pump first....

Odd question

Reply #21 – October 23, 2016, 06:57:15 PM

Hey found the vacspooge leak, it was the pcv the plastic had a crack in it, couldnt see till i got it out...geez