Boost Cut Controler

[SHORTYBOY113]

I Have A Greedy Boost Cut Controler And No Directions. How Do I Hook It Up And How Do I Tune It. Thanks

[JekylandHyde]

There is no need for a GReddy Boost Cut controller.

It eliminates the fual cut which can be done for FREE without installing any parts. Simple cap the vac line to the MAP sensor ~ no more fuel cut.

[SHORTYBOY113]

I Did That Unplug Thing And It Got Rid Of The Fuel Cut But I Read That It Still Cuts Ur Boost At 16 And Not Fuel. And When I Hit 16 Psi It Wont Boost Over 10psi.

[drazhartd]

Originally Posted by SHORTYBOY113

I Did That Unplug Thing And It Got Rid Of The Fuel Cut But I Read That It Still Cuts Ur Boost At 16 And Not Fuel. And When I Hit 16 Psi It Wont Boost Over 10psi.

Don't boost the ct26 over 15psi anyhow.

[JekylandHyde]

Unplugging the vac line to the MAP sensor 100% eliminates fuel cut. I am running 24 psi with it capped. I promise, it works.

The GReddy BCC does the same thing.
The HKS FCD raises fuel cut to 17 psi.

As stated by draz, you do not want to be running over 15 psi with the factory turbo.

[SHORTYBOY113]

I Understand That It Gets Rid Of Fuel Cut Thats What It Did, But How Come With 15-16psi For About 3 Full Seconds I Cant Boost Over 10 Psi Afterthat. I Read That The Boost Cut Is At 16 Psi And Fuel Is At 12. Why Would It Boost Like That And Not Over 10 After That?

[JekylandHyde]

The MR2 does not have a "boost cut."
There is only a fuel cut.
From the factory, FC happens at 12 psi of boost.

If you are boosting 15/16 psi and then you get stuck at 10 psi you are most likely getting stuck in LOW boost mode from KNOCK/DETONATION.

This is why I have suggested to you in another thread not to boost over 15 psi with the factory turbo. The ECU is limiting your boost to save your engine.