Engine Overboost
I have a 2003 Evo 8. Recently I just installed Buschur TBE, Inline MBC, Buschur Filter Kit w/ MAF Pipe Kit and UICP....basically all of their Stage 2 package.
When I took the car out I was boosting around 18-19 psi and in 3rd and 4th gear around redline, the car would feel like it would cut out and a loud pssshhh sound would occur. My CEL came on and when I got a diagnostic, it read that I had engine overboost.
My question is, would a tune fix this so I can run higher psi? or is this abnormal?
Also, if anyone knows of a great tuning place I could go that would be great. I live in NE Ohio.
When I took the car out I was boosting around 18-19 psi and in 3rd and 4th gear around redline, the car would feel like it would cut out and a loud pssshhh sound would occur. My CEL came on and when I got a diagnostic, it read that I had engine overboost.
My question is, would a tune fix this so I can run higher psi? or is this abnormal?
Also, if anyone knows of a great tuning place I could go that would be great. I live in NE Ohio.
i just had this same exact problem i have a FORGE MBC and i just recently got a fuel pump tried uppping booost but i hit fuel cut its almost like doing a hard pulll then hittting a rock wall then you car goes back on i got a tune and i cant stresss anymore than alll your car is saying is GIVE ME A TUNEEE!
Newbie
Joined: Feb 2008
Posts: 39
Likes: 0
From: IL (NE of StL)
I had the same thing on my 05 evo 8. I had a big intake on it and a huge BOV (like that when I bought it). Sometimes (especially when the air was a little chilly outside) I would have cut out at about 4500-5500 RPMs. It would then throw a code (overboost). I took off the aftermarket crap and went back to stock for now and haven't had a worry in about 8 months. I sure though it was because the guy before me never had the car tuned for the mods he put on.
Newbie
Joined: Feb 2008
Posts: 39
Likes: 0
From: IL (NE of StL)
I had the same thing on my 05 evo 8. I had a big intake on it and a huge BOV (like that when I bought it). Sometimes (especially when the air was a little chilly outside) I would have cut out at about 4500-5500 RPMs. It would then throw a code (overboost). I took off the aftermarket crap and went back to stock for now and haven't had a worry in about 8 months. I sure though it was because the guy before me never had the car tuned for the mods he put on.
