Turbo M20B25 Bucks at WOT

[greenguy103]

Hey guys,

When I give full throttle to my car the boost builds, then the car will buck and stutter at high boost (6- 10psi). It will do it a few times then continue to accelerate. Not sure if it might be an internal waste gate issue or anything. Just looking for some help.

Thanks Yall!

[TimeMachinE30]

What RPM?

Fuel starvation issue ?

[greenguy103]

I'll have to double check. Just noticed it today. I think it might be around the 4k mark at WOT.

[TimeMachinE30]

Recalling Kershaw having an issue at that RPM.

Motor specs? Software?

[greenguy103]

Also, I am pretty sure who I bought it from just put a turbo on it and left the injectors and fuel delivery stock. Is there any way to raise the fuel pressure or will i need to get injectors with a bigger LBS/HR?

[ak-]

Can you give us a picture of the engine bay to see what's going on?
If you suspect the person just threw the kit on without any sort of fueling or management you should never go WOT. You can/will destroy the motor.

Considering that, it could be many things like improper fueling, leaning out, spark blowout.

[greenguy103]

I'll get pictures and a write up tomorrow for you guy, but for now it's sleep haha

[Chris Spiegl]

What tuning are you using?

Check the gap of your CPS and if the CPS is working. I am having this same issue.

Also, check TPS

[Bme3092]

Sounds like fueling.