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coil on the HEI cap ?

would be best to have a clean dry air supply but sounds like good logic to me. Might be able to find some sort of air dryer.

have you replaced the valve cover gaskets ?

I am no expert but the EGR is important and really don't effect performance . If it were mine I would try to find out if the chip disabled the EGR if it does I would get a diff chip that doesn't disable it . I would think even a used factory chip would be better than not having the EGR work ...

I need to replace the EGR valve on my 90. I have had the plenum off before and found it really difficult to keep the gaskets in place because of the tight fit. Seems as though the runners are warp a little. Did I do something wrong or is there a trick to getting it in between the runners. Thank...

most people don't know that with age halogen bulbs lose intensity . They should be replaced after a few yrs

could be plugged cats. put a vacuum gauge on it and watch it , if it drops as it warms up it is very possible that cats are plugged . Vacuum could drop to near zero.

I will be looking at the same problem with my 90 in the next week or two , is fine going down the road but at slow speeds it over heats quite quickly . I have a manual switch for the fans so I can kick them both in at any time. They run so time to look up between the condenser and radiator.

I think he saw the price . when they first came out I didn't like them as well as previous models but they really grew on me to the point I like them better than the C3

the COOL factor of pulling up in a corvette, any yr , is hard to beat

If you go for a manual trans try to get the 89 or later they are the 6 speed. Very tough and shift like no other trans I have ever driven.It is called the ZF only downside to it is that the dual mass flywheel is no longer available and should be replaced if you need to replace the clutch. Read...

You replaced dist... that include the coil ? coils will often die when they get hot to little to late .

Datamaster install files I believe these are the files you need to download , took awhile to track them down the company that owned the program no longer supports it . I also found this on this corvette action center Datamaster Authorization Code Work-A-Round - CorvetteForum - Chevrolet...

have been a little busy last couple days, haven't forgotten you.

there was a program with 30 trial scans before you had to pay for it, I have it on an old laptop and still used it two yrs ago , biggest thing is understanding what it tells you. It does work quite well considering the quality computer it is on at the time I bought a cable for the OBDI . I...

you used to be able to buy or make a cable to USB , download a program on the laptop and get live readings not sure if all that is still available

most C4s have a fuel filter at the turn in the frame under passenger feet. Have you changed that?

I think those have a MAF sensor , make sure that is in place and connected, I have run into start but not run if that isn't right. A big air leak after the MAF can make them act really strange.

I have never owned an opti spark but have found that a good battery is critical with todays electronics. Just something to consider. I assume the gas is not old.

the electrical/electronics would be the big concern.Going to need a lot of rubber parts , If I was 10 yrs younger I would check into it. I have my own that needs some work now and at 72 it takes awhile . LOL