Pulsing

[GOT JCE]

Hey guys,I am having an issue with my 86 GN.It seems to be surging in 3rd and 4th gear at full throttle.It feels like it is almost pulsating and trying to go faster.All the scanmaster #s are within spec with th o2 at over 800 at wot.Never any knock,alky set on #4 position.My fuel pressure is set at 45# and I run about 20 lbs of boost with my new te60 turbo.In 1st and 2nd gear the car runs absolutly perfect and flies,then shifting into 3rd it starts with the surging.Any ideas?I will be going to larger injectors soon and wonder if the 36lb ones are causing this condition.Check my signature for everything my car has.Thanks,AJ

 

[Eric Stage I]

It's probably too rich (fuel or alcohol). The chip is set up to supply fuel for about 23psi boost with a stock turbo and alky. You can either turn up the boost, turn down the alky, or reduce WOT fuel. Just watch the knock retard while you're experimenting.

Regards,
Eric