Big Turbo Discussion Thread #2

[lilfleck]

Excuse this dumb question... but if you are overboosting, your boost gauge should read that, right?

 

[greasyginzo]

The boost gauge will show you how much boost you are making but it depends on the tune if you are overboosting

 

[GTR_Killer]

Found pics

 

[drepai]

Exactly what I needed. thank you sir

 

[GTR_Killer]

Make sure and pull that lil piece thats down in the base of the jet out and check under it as well. Its the PITA piece thats hard to get back in.

 

[drepai]

He has some SERIOUS fuel for running that rich at 34 psi. That is insane lol.

Maybe I should just switch to an e85 blend without switching the tune

 

[RGTI13]

Maybe I should just switch to an e85 blend without switching the tune

My thought was try a couple gallons first, see if timing pull changes. That'll tell you what's going on. And, you're already running rich, so it should compensate alright.

 

[drepai]

Lol just called my tuner. Doing that instead of a race gas tune. Beauty of that is there's a pump not too far from me so I can run it all the time


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[RGTI13]

Lol just called my tuner. Doing that instead of a race gas tune. Beauty of that is there's a pump not too far from me so I can run it all the time


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Good luck! I want to see logs!

 

[HYDE161]

start small with E85, log fuel rail pressure actual vs. requested to watch for dips.

 

[GTR_Killer]

I thought we cant do E85 bc it eats our fuel system for w.e. reason. What makes you think you can run it all of a sudden?

 

[RGTI13]

I thought we cant do E85 bc it eats our fuel system for w.e. reason. What makes you think you can run it all of a sudden?

Just have to have the correct injectors. Even with oem injectors, people have been running an E35-E40 blend without issue for a long while.

 

[drepai]

E85 runs about 30% richer than gasoline. The main issue is having enough headroom in the fuel system. Since I have tons of headroom I figure I can get away with running a blend.


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[GTR_Killer]

So what, OEM get clogged or something? What do you mean headroom? it sounds like if it runs richer than you need less to achieve a higher level so you would think head room is the least of worries.

 

[ErBall]

So what, OEM get clogged or something? What do you mean headroom? it sounds like if it runs richer than you need less to achieve a higher level so you would think head room is the least of worries.

You've got that exactly opposite. E85 requires on average ~30% more fuel by volume than gasoline for the same power levels. Upshot is E85 is stupid knock resistant.

The main worry about E85 it its corrosiveness. HPFP seals and injectors get strained quite a bit more. I personally wouldn't try E85 alone, but blending is ok as the gas is there for lubricating. Just adding a level of variability to the equation.