Thread: Strange Dyno Graph..Dip + Missing WHP (Updated: ECUTALK logs)

Tuneability is where it's at.

Could be also the boost leak and the turbo trying to 'catch up'.

Ya, I really need to get that fixed once and for all. I say when we take the turbo off we boost leak test the turbo off the car to make sure it's fixed. Makes me think the leak is at the big retaining clip between the backplate and the CHRA.

Just make some plugs for the compressor outlet and a tester for the inlet or reverse or whatever...then pressurize it...fun times. We could possibly block off the compressor outlet on the car and test it too, instead of pressurizing the whole system...dunno? What do you think?

Ya I'm basically thinking the same thing. I was thinking we keep the outlet elbow pipe bolted to the turbo. Block off the BOV thread and the crank case vent on the inlet pipe, and then block off the compressor outlet and pressurize that section w/the turbo off the car and on a work bench. This way we can confirm our fix worked without bolting the turbo back up to the car. I'm pretty confident we can rig something up.

Either way, being that leak is on the turbo itself makes me think it could be messing with the spooling characteristics and velocities of the turbo wheel.

-G

JWT is sending a new tune within 2 weeks. I'll update then.

I've been impressed with the customer service @ JWT.

-G

I think you're confusing your mechanical timing with your ignition timing. And you are putting the car into timing mode before you're moving the dizzy correct?

of course