airn

i just had mt bnr stage2 tuwins installed today and i am getting 0 psi until the secondary turbos kick in and then it jumps to 10 psi like its set for. also when i let the rpms come back down to idle there is a rattle comming from the arround the turbos? any sugestions will help. thanks

Street King

Check your hoses and vacuum tank. The rattle is probably a heat shield or most likely a cat that's falling apart.

airn

i have full exhaust so it must be the heat shield. i'll double check the hoses tomarrow

911GT2

WTF?! I thought the primary needed to make at least 8lbs of boost for the secondary to work at all. How is it possible to operate the TCA without boost from primary turbo?

airn

i dont know whats going on my boost guage reads o psi until about 4500 rpm then i get full boost. its crazy.

SPOautos

This may sound silly but you sure you didnt swap some hoses around and accedentally put it in poor mans non seq ? lol

Wierd how your getting boost after transition with no pri boost. Sounds like you have some wierd vac line probs. Please be sure to keep us up to date on it, I'd like to know what the fix was.

STEPHEN

Mr rx-7 tt

iTrader: (5)

My buddy had the same problem. The actuator rod on the turbo wasn't adjusted correctly. You can try and spin it but it may be to rusted. We just redrilled the rod so it would fit over the pin. It rattled and he had zero boost due to the door being open, this fixed it .........

airn

thanks for the info guys. i'm taking the car back to where i got the work done at. we will be checking them out today. i hope its somthing stupid.

BoostedRex

Well, you can bet that it's nothing wrong with the turbos. I haven't heard of anyone yet who had a problem with BNR upgraded twins. There have been a few instances of them being installed wrong though. Best of luck to you and I hope that you'll be enjoying the newly added power soon. Laterz.

Zach

Marshall

Yeah check the actuator rod, especially if you're hearing a rattle.

psi4psi

0psi on primary would mean that the Charge control valve is open and the actuator is not funtioning or the vacum hose on their is not on correctly or leaking. Check that first. Start the car and see if the CCV rod is pulled in? If its not pulled in than the Y-pipe is accepting air from both primary and secondary before 4500rpm

2nd thing could be that BNR did not adjust the wastegate after porting it and left it ajar causing exhaust. That should still give you some primary so its probably not it unless your boost guage is bad.

airn

well after about 75 miles the primary boost is working now i was just driving and it started to work. as for the rattle its the turbo control actuator rod. thanks for the help guys i just need to figure out how to get rid of the rattle.

Mr rx-7 tt

iTrader: (5)

adjust it out or drill a hole outward so it will fit over the stem with the clip..