boost on gts engine?

[Xracer729]

i would use the correct classification for the engines but i dont have that down yet, but how would a forced induction setup affect the VVTL-i on the GTS?:rolleyes:

[Keyshawn]

No one here really knows first-hand. Ask the guys at XS Engineering. They made the only known turbo kit for the GT-S so far.

XS Engineering: (714)-992-4133

[ProToolsKid]

Say bye bye to the lift that would be the first to go

[larryd]

not necesarily.. some cars keep the larger cam profile like a turbo SI still has VTEC..

btw.. engine designation for a Celica GTS is 2ZZGE

[SLOWICA]

not true.... the lift doesnt have to go....

[Xracer729]

thanks

[hypeGTS]

lift wasnt lost with XS's kit was it? from what i read the VVT was lost but not lift. or maybe that was the matrix. does anyone know if they put the tec-II that was being test fitted for the matrix on their celi as well?
it would be interesting to see if the tec-II, return fuel system and low comp pistons would be a reliable turbo gts setup.
i'd probly need area 51 clearance to get that much info outa XS tho

[Xracer729]

well the matrix as far as i know has the exact same 2ZZGE thats in the GTS and i think the same trans so i dont see why it wouldnt work

[ringthree]

Originally posted by hypeGTS
lift wasnt lost with XS's kit was it? from what i read the VVT was lost but not lift. or maybe that was the matrix. does anyone know if they put the tec-II that was being test fitted for the matrix on their celi as well?
it would be interesting to see if the tec-II, return fuel system and low comp pistons would be a reliable turbo gts setup.
i'd probly need area 51 clearance to get that much info outa XS tho

XS engineering disabled the VVT-i, which is the on the fly variable valve timing, they did not, from everything i have read, remove the VVT-L (lift) function.

[Keyshawn]

Actually, XS Engineering kept everything about the VVTLi system on their turboed Celi stock, because they kept the stock ECU. The Matrix's (which also used XS's turbo kit, but with a stand-alone ECU) VVTLi system was modified by Vishnu Performance when they installed the tec-II ECU.

[ringthree]

Again the grasshopper is schooled by the master. I stand corrected. I will go back and read those articles again.

[Oo DaRk StAr oO]

Here's the deal. David Draper and myself will be turbocharging a GTS and this isn't just a prototype like every company this will be a market item. As for lift. True VTEC keeps lift... I had the VTEC lift in my SiR enabled. What we will do is make the kit w/o lift and then when we tune the car enable lift for computer tunning. Now if this dosent work lift will be disabled but we will stay on it.

Hope this helps guys,
Matt

[Ackbar]

It seems to me that VVT-i (not the lift component) would be more detrimental to the engine. You don't want to be advancing the timing much on a boosted engine. IMHO, lift should be kept. It's almost pointless to remove lift and add a turbo, since your 6spd are geared for the higher powerband. Actually, it would probably be better for an auto to disable boost and add a turbo (again due to gearing).


Originally posted by Oo DaRk StAr oO
Here's the deal. David Draper and myself will be turbocharging a GTS and this isn't just a prototype like every company this will be a market item. As for lift. True VTEC keeps lift... I had the VTEC lift in my SiR enabled. What we will do is make the kit w/o lift and then when we tune the car enable lift for computer tunning. Now if this dosent work lift will be disabled but we will stay on it.

Hope this helps guys,
Matt

[TRD_555]

Get NOS!!

[Phaseshift]

Originally posted by TRD_555
Get NOS!!

AND WATCH THE PRETTY FIREWORKS THAT START TO COME OUT OF YOUR ENGINE!

:wave:

[Spiffster]

What I dont get is (from what I have heard)... why is it safer to supercharge a high comp engine but it is not ok to turbo charge one with out lowering comp and adjusting the vvt-li...? Or is it??

[Keyshawn]

Originally posted by Spiffster
What I dont get is (from what I have heard)... why is it safer to supercharge a high comp engine but it is not ok to turbo charge one with out lowering comp and adjusting the vvt-li...? Or is it??

S/C's are not inherently any safer. However, Blitz's kit in particular has been under development for TWO YEARS (and tested very thoroughly by all reports) and comes with an ECU to ensure that the kit runs safely with the high compression. That's what makes their kit so much more appealing than a custom turbo set-up, where YOU would be the guinea pig. If any company put that much development time into a turbo kit, it would run more safely, too.

[BigBad91Turbo]

Originally posted by TRD_555
Get NOS!!

NOS = Poor mans Turbo...

Disabling the VVTLi would make programing the TecII used in that matrix a lot easier. Agian the TecII really requires it as it controls everything about your engine. I am not sure how they handled the variable lift as that is oil pressure driven from what I understand. I would expect with a small t3/t4 turbo kit you would want the lift to increase scavaging and help create a flow though to get as much of that compressed air in there as possible.

If I am going to the trouble of a turbo kit I could put up with some rougher idle to get the awesome flow at higher revs..