Man what a diffrence 13-15psi is from 9-11! I'm guessing the turbo is in more of it's efficiency range at the higher level. But to test it out the first time I went to a new stretch of road and was at 4k in 3rd gear at a steady state and I floored it... Man, what a difference! As it hit 5k the tires broke loose and the rear stepped out and I hit rev limiter (8100 at the moment) That had to look funny to the dude raking the leaves in his yard lol.

To all of you who are thinking about doing a turbo swap I say DO IT!

 

Doesnt that depend on the turbo itself and how its setup? I guess every combo will have a different sweet spot. Sounds like fun, just dont let it get away from you.

 

Totaly depends on the turbo, mine just happens to like the higher range.

I'll try to keep it between the lines

 

Niiiiiiice!

 

makes me want to purchase an FC and just boost it till it blows.

 

Man that sounds awesome man. I just got my turbo setup on the street(sort of), but i've only driven it around my neighborhood, heh, and only boosted to like 2 lbs. The BOV scared the hell out of me, even at 2psi. I cant wait till i'm pushing 14lbs, it's gonna be great!

 

take it to 25 you wuss

 

go over 9psi without a fcd and you blow it

 

...or go over 12 psi WITH and fcd and blow it too

 

Nothing like the sound of a boosted rotor I did the conversion in my s2 a few months ago now, s4 13bt, mtx8, front mounted, still running it in so its only running 5-6psi, and has a rev cut at 4500rpm, but it still smokes rubber into 3rd

cheers,
heb.

 

Life starts at 30 psi. And real men dont need BOV's!

 

^^^^i love that, cause it's true ^^^^

 

INDEED!

BTW - Jeez Setzep, you're running a tiny little turbo and tiny little ports. I see your intake ports go in through the side housings instead of the rotor housings like they are supposed to.

- Pete (Dum de dum de dum, no sir there's nothing up my "sleeve")

 

You hear the BOV a lot more at 2psi than you do at 14. At 14 you're too busy keeping the car on the road and ithe exhaust is ****** loud on top of that

Look who is still alive! I suppose some day I will, hell there is 110 at the pump 5 miles from me

so you are spinning the tires in 3rd at 4500 AND with 5-6psi?? What is your setup??

do you use the wastegate to bleed off turbo energy then?

yeah, someday I'll have to build a real engine with the "round ports"

 

The BOV is for tiny stock turbos that have to spin to the moon in order to FLOW enough volume at the top end.

Bigger turbos don't have to spin as fast, even for more boost/flow, and they tend to be built much stouter as well. So you shut the throttle and the turbo surges a bit and slows down.

I'd much rather hear compressor surge than some prissy BOV.

 

yeh good luck running 30psi in a rotor lol
and sometimes blowoff valves can be necessary for the life of your turbo.. but not to much at higher range, maybe a bypass valve..

 

Blowoff valve = bypass valve

 

I guess I'd rather keep the turbo speed up and deal with the psshhht. Becides, a pssshht sounds strange from my stock looking car

 

I like the blow-off noise also

 

compressor surge is bad. even on better stronger more expensive turbos. it is still turbo abuse....

 

I agree. Even a little surge over time is not good. I feel a BOV is cheap insurance. It's a debatable topic.

 

If you dont like the sound,just run the BOV as a bypass like I did with my Blitz.
Not only does it muffle most of the sound,but with the BOV being open under vacuum,gives the engine a bypass around the restrictive turbo compressor.This can help with low RPM spoolup and revs.Plus the suction in the intake before the turbo helps to drain the pressurized air.