RnR gt35r turbo kit, e cover, .63 hotside.
ACT clutch
38mm tial wastegate
greddy type s BOV with one spring

i think that about does it.


as far as power with the xede vs the utec, i can't really fully answer. the xede was not dyno tuned, it was road tuned by me. it had all the timing advance that i could give it(according to what ive been told by the vishnu powers), this is where i picked up all the power with the utec.

so far, driveability wise the xede was better in part throttle acceleration...due to the 25% throttle activation thing on the utec. still don't know if thats something i can change or tune out...time will tell.

 

Did you do any straight 93 pulls with the utec?

Scorke

 

nope.

 

and i actually found out my boost gauge reads a little high(1.5psi) so i ended up making 471 on pump/meth. but for comparison purposes i wanted to post the graphs where the boost was the same between the utec and xede.

 

And that is where the difference lies. Where tuning an Xede is concerned, I'd be inclined to start at lower rpm and up the timing for every other or every third column of high load cell groups until the ECU activates retard then back off slightly. Then, I'd interpolate the cells in between, and that should optimize the timing settings. Of course, this requires dyno time, and a DJ session would require some additional timing to be pulled to compensate for loading difference.

One thing about turbos like the GT35R, the spool time differs so greatly from the factory setup, that one should expect to be able to up the timing significantly until some point during spoolup. After all, a GT35R car is almost like a normally aspirated setup in rpm ranges where the factory setup is at full boost.

 

Check your PM...

 

Very nice.. Love to see more stock block numbers. This is what I was thinking of going except maybe for new forged pistons and rods.
Your 93octange+ meth is very helpful.
Thanks.

 

yes, i know where the difference lies. but the way the xede is set-up, you are essentially guessing at the timing at all times and REALLY guessing when you start advancing past the 0 settings. I didn't come on here to knock the xede at all, i loved the unit...just don't think its best for big turbo applications. maybe im wrong, but i just wanted to try something else.

 

Although not a fair comparison, you got very good figures with the utec. I wish you had the xede professionally tuned, that would've made for a more reasonable evaluation between the two units.

 

yes, it would have. but, the purpose was not to do such a test...but to get the power i wanted and the functionality i wanted.

this was never intended to be a utec vs xede thread. just pointing out my personal opinion.

 

are there any 10 sec 35R xedes out there?

 

Probably not. I can only think of 1-2 people that use an XEDE w/ a GT35R.

 

You most certainly can advance timing. I'm tuning on top of a dynoflash which has advanced timing over stock and I have NO timing pull anywhere and in places .5-.8 deg advance, particularly after 5k rpms. If you had SMART, you might have started out with it zero'ed out under boost and a deg or two advance (very, very conservative, but I prefer baby steps) down low tapering out as boost came in and logged the knock output....and adjusted accordingly.

Either way, great read and a great post Very interesting stuff.

 

True, so long as fuel and timing curves can be sufficiently manipulated by any comparable device, it's a largely a moot point where dyno numbers are concerned. Of course, one drawback to a device like the Xede is one cannot know the actual timing curve values, which are of course mostly academic, so long as the expected performance is there.

As for Xede + GT35R, I'm on the verge . . .

 

If smoggie ran his car down the 1320 it might not be that far off.....

Scorke