I cut out the filter, and kinda followed the DIY double pumper guide. Except I just kept it as a single Walbro 450 and installed a radium inline filter. There is plenty of clearance in the stock hanger without the basket for the 450, and now the filter is serviceable.

 

Biggiesacks. Wholly *****. If that’s it, you’re a Saint. Going to check.

 

i think its a bit lean
but keep ch eckin

 

Have you checked your exh cam angle sensor? Had a similar issue where my car would only break up under boost and changed the exh cam angle sensor and no more issues.

 

At a second shop. Their concern is crank walk. Said to check that?

somethint stands out here. When I replaced the clutch from Quarter master over to Exedy, we changed the type of clutch. Push to pull or whatever. This is the only thing we can think of having this effect.

Normal throttle is fine. It’s only on full throttle. Logs show fuel cut.

 

Can't believe this is dragging on so long. Dumb questions: You've checked the fuel cut setting and another tuner has looked at the tune and the data logs?

Seems like an electrical or tuning problem, not a mechanical problem.

 

Do you have another car you can swap the cam angle sensor with? I’d try that if you haven’t checked it yet. That was my issue and decided to try it after reading MrFred’s thread on it.

https://www.evolutionm.net/forums/ev...on-sensor.html

 

Just arrived. Trying all sensors.

 

What is your load limit set at? Could be hitting it. LGTD brought this up in the first response but I haven't seen any follow up on it. In your log you're exceeding 300 load which I believe would hit the limit if it hasn't been modified. Could be a boost leak or some other issue causing the engine to hit higher load than before the work was done.

 

New sensors in. Exact same problem. Load threshold is 350%. We are hitting load at 150%. There is a setting somehow that is causing car to shut off fuel. WTF! Out of options. What could have possibly changed by swapping to different style clutch and new trans?

 

Did you check the load/boost cut limit??

 

Here is boost load cut:

 

Fuel cut load 1 & 2

 

Latest logs: check 150 load

NLTS - no lift to shift is only setting we have at 150 threshold




We can email the ROM to anyone interested.

 

Could be front o2 sensor. I had that happen at the track once. Any full throttle goes into retard mode and it...sounds...off too. NGK/NTK makes one for ours that is way cheaper then OEM. There was something about it having to be in a certain range and if it was in 0.x then it was busted. Or it was the other way around, been awhile but the thread is out there. Every other time I've pulled the turbo off you breath on it wrong and it goes kaput.