knopdm

i have an 86 951 completely stock except for a cat bypass. I just recently fixed an overboost problem and im now running about 1.7 bar on the gauge. Im about to purchase the AutoThority Chips and an Accuboost from boost sciences. Is it a good idea to get a 3bar FPR?

lart951

If it's not too late, the best bang for your money is vitesse chips, you will get more power than autothority. Here is the link

http://www.vitesseracing.com/

do a search on chips and you will see that vitesse is the way to go.

Bret 944

Yeah, I have some Autothority chips, they're alright. I'm going to get some Vitesse chips very soon. If you're deadset on Autothority, check around the list. They go all the time for $50-$100.

mroberts

I've got a used AccuBoost if you're interested.

JoeN951

If you go with the Autothority chips you do not want to install an accuboost as they are programmed to work with the Autothority bango bolt supplied with their chips

Bret 944

Joe is correct, Autothority chips aren't programmed to hold constant boost pressure up to redline. The Accuboost (AFAIK) is designed to do that, meaning you would be lean probably after about 4,500RPMs or so.

lart951

Lean = blown head gasket
Blown HG = lots of $$$$$$$$$$$$$

awilson40

Sometimes it blows anyway
I'm running 12.5 at 3200rpm richening up to 11.8 by redline
and I'm replacing the H/G this weekend.
Sometimes the old girl just wants to show her age

lart951

I am using the MLS cometic head gasket no problems so far.

knopdm

Thanks for the info guys. Are the Vitesse chips programmed for holding constant boost?

shortyboy

vitesse chips are one of the best if not the best chips to get for the 951.yes they are programed for a specific boost,but holding the boost depends on you wastegate and whether u got a vacuum leak or not.

awilson40

Yes they are, my car bleeds down to about 13 by redline which is why I'm richer.