I beilive that the UTEC hac a boost control function, is this a reliable tool, or should i be using some other means for boost control,

I have been considering the HKS EVC V,

what is everyone's opinions on this??

thanks,

oh yeah, its for an '04 STi, w/TBE(soon )

 

the UTEC boost controller is a good component..

But having a EBC is nice too where u can set the boost and totally leave it alone.

I have a EBC and my boost is fixed/set already and so i just totally concentrate on tuning timing and fuel.

 

you certainly can use the UTEC to control boost, but you can also use an external EBC or MBC. I've done it both ways (utec control and mbc), and currently I'm back to using the utec to control boost simply because I like having one interface to look at in tuning the car.

 

thanks guys, i'll let you know how it goes, i think i'm gonna go with the EBC, despite the added cost

 

For me the jury is still out. I know folks who have no problem. But I don't like the idea of having the boost controlled by something that is not at all in cahootz with the UTEC... esp being that the AFR reading from the stock sensor is useless to the UTEC at higher loads. At least with the UTEC's MBC (ABC) its just a lowering of the boost curve that the wastegate sees, so in a relative manner boost is directly controlled by the UTEC. My guess is that with a non-bleeding EBC you are going to get more consistent response (bleeders are notorious for spiking). However, when you change things on the fly with the EBC, whats that going to do to how the UTEC mixes parameters? Anything? Wouldn't you rather have the UTEC in direct control of a solenoid that is affecting wastegate performance?

I've been thinking about a thread ( http://forums.nasioc.com/forums/show...hlight=cyclone ). Basically we need the bleed because TurboXS explains that the stock BCS can't handle the boost of say a Stage4 (vf3x, ~18+ psi) setup. In the thread I mention these guys have taken a more robust BCS , thrown in a resistor to interpolate the signal coming from the ECU/UTEC and claim to have had some great results. I have ordered one myself and will eventually get around to playing with it. Its sort of the same thing TurboXS is trying to do with their bleeder MBC, but the interpolation is electronically done.

Right now I am getting some knock way up high in 3rd gear on a base stg4 map that has already been tuned down just a bit. I've been curious to leave things the way they are and just switch out the EBC for the BCS I mention above... we'll see.


jason

 

I'm about to get a utec and will be using an ebc (blitz sbc-id) for boost control and need to know what to do with the boost settings on the utec in order for it to work. Thanks.

 

do nothing...... the utec is more than happy to let your ebc do the work, you dont have to change any settings.

 

Hmm a SAFE start would be

set/gain or gain/set (i forgot) is around 10/55

So far @ 55, i hit around 15psi, and 60 I hit 16.5psi

 

Yeah, but that's cuz you got that dinky turbo With about 7/50 I'm hitting 17.4. With the TD04 and no UTEC I was seeing about those numbers with pretty much exactly your settings.

I realize there's no problem with using an completely external boost control system. MAF signal is MAF signal. But when the UTEC is in control, isn't respond and adjustment of boost going to be better? (This is seems to be the trend of the evidence for people trying that GM BCS).

If I end up using the GM part, I gotta sell my RPM-based turbo timer and my Blitz SpecR, and buy the Blitz boost-based turbo timer so I can still get a digital boost-peak-hold device

jason

 

How bout with an ECUTEK? Can you use an EBC like the AVC-R in conjuction with that?

 

hahha.. my dinky turbo ;-)
sell me a vf34

 

Its almost silly, to me, for the same reasons. You add a piggy back or reprogram the ECU for higher performance... and then you cut its control off at the knees.

jason

 

But the stock boost control solenoid can't hold boost as well as a EBC can it?

 

Correct... thats why people are trying out the GM Part solenoid. ~10k resistors seems to interpolate the signal, and its ready to go.

jason