ct9 loosing boost

[cheadder.ep82]

wats up lads new to this site but havin a problem my cars staring to loose boost in high revs boosting .9 and when i hit around 4800 5000rpm its loosing boost dropping off too around .6 i usually change gear at 6000rpm and boosted fine up to there before???

[andy.i]

possibly a boost leak

[cheadder.ep82]

possibly a boost leak

checked all the piping have a tiny crack in the mani but got it welded

[N80Jamie]

Have you got a boost controller at all?

[DavidAshton]

What actuator are you running, syptoms of a tired one imo.

[andy mccullough]

What actuator are you running, syptoms of a tired one imo.

x2 or if you are using the stock one, I would recommend upgrading to an HKS one.

[lukEp]

Actuator will improve the boost loss but not cure it, have you still got efi pipe and restrictive exhaust? Ct are a small turbo and at higher revs struggle to provide sufficient boost the inlet on the ct9 is very small and it makes it worse when the stock efi pipe is still there.

[cheadder.ep82]

Actuator will improve the boost loss but not cure it, have you still got efi pipe and restrictive exhaust? Ct are a small turbo and at higher revs struggle to provide sufficient boost the inlet on the ct9 is very small and it makes it worse when the stock efi pipe is still there.

stil have the efi pipe but with a blitz air filter running a jap speed exaust with jap speed decat and hks accuator new mani on de way have no boost controller and have a jam fuel cut and front mount