Exhaust help !

[mannyr.2000]

Hi All
Recently installed a 3inch turbo back exhaust (with cat & hotdog) in my ZD30CR sounds great runs terrible
Feels like I've taken a step backwards, less responsive , even bigger turbo lag.

Been told its actually running in limp mode, but no engine light is on, is this possible ?
Also been advised a Tillix boost control kit will fix the issue ?

Appreciate all the help i can get, I'm a noob when it comes to this stuff...

Thanks all


Sent from my iPhone using Tapatalk

[Coldcomfort]

I had the same. You will have to go with a dawes valve set up or risk over boosting your engine.

[mudski]

Yep. You need to add some manual boost control in now to fix all this.

[pollenface]

It can run like crap without an error code, I've done it when I forgot to tighten an intake clamp.

there are two blanking plates available. you can blank at both ends to reduce intake/exhaust turbulence. The intake side goes under the EGR volume control valve (if you're wondering)

There are various manual boost control options, I have the HPD type only with no needle valve. I have a bung tapped into the steel intake pipe above the turbo for boost reference.

You have to do both at the same time, blank EGR and manual boost control and as I recently learned keep the vacuum solenoid connected to the wiring harness otherwise it WILL go into limp mode.

[lychniscuddly]

Thanks. I will try with a dawes valve set up.

[BigRAWesty]

Check out the video I did for the tillex valve many moons ago.
https://youtu.be/7tQziIey884?si=SJiWqoCbdMidHl4J

It's a great setup. I ended up back at 16psi.
When at 20psi for long runs it dropped into limp mode..

Here is my original thread I did on it.
https://r.tapatalk.com/shareLink/top...ink_source=app

[Bidja]

Thanks. I will try with a dawes valve set up.

There are a lot of copy Dawes boost controllers out there, the only one I trusted was the Dawes 3BarRacing manufactured (Black Body). Does not seem to be available now, lost mine and still sad about that.
Would buy another if I could get my hands on one.

Suggest that you buy the Tillix manual boost control kit and check out @BigRAWesty videos.

https://www.tillix.com.au/product/bo...l-zd30-di-crd/

BTW drop by the intro section _ say G'day mate