blown 944

Try turning the boost down and see if it goes away. Every tuner has different parameters for overboost protection. That is what race gas and separate maps are for.

Rogue_Ant

Yep, you are just at the limit of triggering overboost protection...
With the colder air - your probably making a slight bit more boost than before, causing an overboost scenario.

JBrown

ok i will try turning it down today but the thing is it got so cold and MBC suck they dont stay were u put them my car was reading over 21psi i was gettin around 24psi and it did not choke. i did not keep it that high i would adjust it so i would be around 18 but under 20psi. with this weather i have to adjust my boost a few times a week unless my boost gauge is bad?

JBrown

hey josh the chips i got from you have an over Boost protection and if so what is my boost limit

Rogue_Ant

They do, are you on the pump-fuel setting or race?
Overboost protection allows a very short spike, before cutting the engine... Also possible that the boost gauge is a bit off.

JBrown

im on pump gas . i should be at 18psi but the weather messes with the boost. i have an eletronic controller im goin to install so it does not spike, i lowered my boost today i was gettin 15 1/2 psi i drove it for about 40mins total today and i got on her a few times and it did not cut on me but im going to give it a few more days to make sure it is overboost protection. and yes i think my gauge might be off a little

Rogue_Ant

Yep - the overboost protection is there to keep the motor from harm - and a good thing my software has that protection by the sound of it!

JBrown

yes and the A tune works great now i see a big difference . so if i set my car at 18-19psi i should not hit overboost ?

Rogue_Ant

17-18psi is really the max on pump...

JBrown

oh i never new that i see people runnig 20psi on 93. im going to keep it at 18psi until i get my meth kit and move it up to 22psi and ill be comming to you for a new tune

Rogue_Ant

Sounds good