High boost sputter(long)

[svoman2300]

Let me start with all my plugs ,wires cap , rotor and pvc have about 1,000 mi. on them and all Motorcraft. Also 255 pump, Kirban adjusted at 39 psi with vacuum off. I have a manual boost control adjusted to about 18 psi (stock gauge). What is happening is under heavy acceleration when in high boost I get a bad sputter, many of you may have heard it during the autocross at the reunion, and it takes a few seconds for it to clear up. I installed the Kirban today and it seemed to help a bit but it still does it but just not as bad. Also since I'm already out of the closet in the computer chip post, I have a Superchip with 42lb injectors(I know, I know). I have a few of theories #1 the chip is a POS and the 42's are too big. #2 The stock gauge is way off and it is getting more than 18 PSI #3 Years back a friend of mine screwed with the VAM (bent some spring) but it didn't sputter back then. I have some 35 lb injectors on the way I am going to ditch the chip and try that but I thought I'd see what input I would get from you guys. Before I get asked my mods are as follows gutted and ported intake, stock head with Ranger cam, PE computer, ported E6 , larger turbo from Turbo City ( I think it has a larger compressor wheel), full 3 inch exhaust. Sorry for the long post.

[GAboySVO]

svoman2300,

I'm running 42s on the stock PE in my '86. Just try unplugging the Chip and see what you get.

The only thing I noticed with the 42s is a drop in fuel milage, but that could just be a results of my heavy foot/city driving.

That would be a quick way to eliminate the chip as the culprit.

[svobud]

base timing?

[svoman2300]

Originally posted by svobud
base timing?

10 degrees . I thought the Supercrap recalibrated the computer for 42's. I'll try unplugging it.

[svoman2300]

Well I unplugged the Superchip and it ran noticably worse. I messed with the fuel pressure and it didn't run any bettter or stop the sputter. Well I decided to mess with the cam timing since I have an adjustable gear and noticed like a retard I retarded the timing 6 degrees instead of advancing it. After advancing the cam timing the sputter went away. Now I can hold th pedal to the floor and flog it like it was meant to be driven.

[svobud]

Just shows you that not ever cam is sitting exactly like the next ..

Glad you got it figured out!

[kiwi]

......23......

......Check your G valve possibly~ bypass it temp......