Loss Of Power With External Gate

[dragons90]

Could the turbulence be causing the turbo to drop out of it's efficacy curve.

[dragons90]

Creating high exhaust backpressure in the turbo.

[RIP85]

Got car back after 4 hours on the dyno tuner wasn't able to add more boost due to not being able to get the mixtures right in the top end no mater what he tried just could not get the car to play ball so now the car is making 75 less hp on 4 psi more boost but the external waste gate has allowed more low end power so instead of having top end it's got low end which has it's benifits lol

[IH8TOADS]

That's a massive loss. Have you got any data on what timing the engine was seeing before and after? I would go out and do some data logging and see what it's like now as a minimum (if your tuner hasn't done it already).

[RIP85]

I have given up on this set up just ordered a similar turbo to a gtx42 but mta spec

[IH8TOADS]

What manifold you going for?

[sixman]

I have given up on this set up just ordered a similar turbo to a gtx42 but mta spec ImageUploadedByMotorculture1391656149.253027.jpg

Are you sticking with the same tuner?

[RIP85]

<br />Are you sticking with the same tuner?

<br />Maybe very limited to tuner due to the engine setup with fixed cam gears never let me down the last 4 years he suggested larger turbo from the start <br /><br />Manifold will b 6 boost or exotic exhaust setup twin scroll duel waste gates once turbo is finished being built I'll see which way I'll go

[dragons90]

do you know if the new exhaust housing you got was a fg one.

[RIP85]

Genuine garret 1.06 4 bolt t3 flange