dillon410021

i am trying to track down a running problem on my 951. I need to know if anyone is running a manual boost controller with autothority stage 2 chips. I am thinking this could be part of my running problem since I deleted the stock cycling valve.
thanks

Rogue_Ant

What problem are you having?

dillon410021

some days it doesn't want to boost nicely, but others it will. It has good and bad days. I just seems sluggish.

lee101315

I'm running 18 psi on autothority chips with a 3 bar fuel pressure regulator. No running problems here.

I would check for boost leaks and loose vacuum lines... For some reason they just always appear every few months

Tbred911

is there no special silicon hose kit for 944 turbos that you can buy to replace all your lines hoses and elbows?

86 951 Driver

Check out Lindsey Racing for that. They have a Kit that has all the hoses you should need as well as intake manifold gaskets. It was about $104 I believe. Not a bad deal.

dillon410021

I have all new LR vacuum lines

Oddjob

Doesnt boost nicely, meaning? Sometimes it doesnt make boost, sometimes it does? Or sometimes it has a poor throttle response, boggy, laggy?

Intermittent boost level problem running a mechanical control system - I would look at the waste gate and the MBC itself, something could be sticking open/closed.

dillon410021

like the afr is off at time but is right on other times. I really need to get a wideband afr.

Euro951

I had autothority chips with MBC and had no problem. Transition into boost was fine.

MooreBoost

i was running 21 psi with mbc and the stage 2 when i first got my car. i had similar problems as you after my friend StrekStrekStrekStreked with my boost controller and broke it. worked fine after i put a new one in

dillon410021

what part of your mbc broke? Which of the same problems did you experience? what were all the mods your car had so I can see if mine is missing something?
thanks

MooreBoost

umm im not sure what broke. my ex friend kept turning and turning it over and over again. i took it apart and there was a seal that was all messed up. i replaced the seal and it still didnt work. i put in another one i had laying around and it worked again. i had 3bar fpr, super shimmed stock wg, stage 2 chips, k26/6, LR 3". i couldnt adjust boost and sometimes it would feel like the car wasnt at 21 psi and would feel like it was at 15psi. i didnt have a gauge installed at the time so i couldnt see what boost really was.