Alright fellow Evos, i need some help. For you guys that run race gas maps, how much boost are you able to hold to redline on the stock turbo? i currently have an xede running 25psi and dropping to 17psi at redline. here are my other mods:

HKS 264i, 272e cams
cam gears
10.5 cm hotside
full 3inch dump back exhaust with no cat
k&n drop in filter

also, what power are you guys making who have similar mods as me, but with a utec? reason im asking is, my buddy has a utec...we were at the strip last night and i trapped 108 while he trapped 113. his car holds 22psi to redline. i made 290whp on a dynodynamics dyno on 93 octane, im sure you guys know these dynos read about 14% lower than dynojets. i made only 10 more hp on 107 octane. im trying to work some kinks out, but at UTEC might be in my future. any help would be appreciated.

-Jeff

 

25 psi down to 22psi would be a good bet. Xede not doing enough for you? 108 sounds like a conservative trap. My friend trapped at 108 with only 16 degrees of timing.

 

Im holding 22psi all the way through 7500rpms with no issue. I am using the AVC-R though.

 

If you do switch out, I'd be very curious as to the results. I'm probably a few weeks out on a decision, but I'm leaning UTEC currently.

 

yeah. well, im going to try a few things first. in process of getting a better BOV and seeing if that helps. gonna see what i trap on race gas after that as well. i love the tuneability and ease of the xede. i think it combined with a MBC may be the way to go. ill def report my results.

 

I have similar mods, only I had a reverse scam set up 272/264. These are corrected high altitude numbers from last summer : 333 HP 339 Trq. No track times though.

I sold my Xede because of it's disappointing (read: unsupported) logging features, plus I don't expect to see Shix in these parts again very soon (long story).

The Uteck had superior logging features, plus you don't have to deal with off sets if you are trying to tune it yourself. Utec has greter expandability with the Tuner Pro or even the simple Tuner unit.
The install is a cinch, and it's well supported (at least so far.)

If you have the factory BOV, switch it for something good, it's only rated in the low 20's. Mine was leaking like crazy at 22-24 psi. When I put on a
Greddy S, boost jumped to 28 psi and "voila" ... fuel cut in 4th gear on the highway passing a mini van. Turned it back down to 22. The turbo has to work way too hard at high altitudes to keep it much higher (at least if I want it to last very long.)

The Utec is a straight ahead platform. Read the user's manual if you haven't. If you have access to Shiv , you can't go wrong with the with keeping the XEDE. IMO he's "THE" reason to use an XEDE for above average advantage.


Good luck,
Dean

 

thank you for the post. i have what i feel is second best to shiv tuning the xede in my area. Andrew at dyno4mance has been tought by shiv on how to tune the xede. they work together a lot so to help us xede owners on both coasts. they have the same exact dyno as well.

may i ask what kind of dyno you made that power on? and did you have the hotside upgrade?

v3 is now available for the xede, allowing complete logging capabilities with launch control ect...i haven't gotten my set up yet, but am looking forward to it. i cannot run more boost than i currently am on pump gas, so i don't think the BOV will really help my pump gas numbers/traps. If you know how it might, please explain.

Thanks Dean,

Jeff

 

hmmm, you might wanna try an MR bov or something with a stiffer spring. It will flutter a bit, but mine (same exact setup as yours) holds pretty solid to 22 psi in the higher gears. The lower ones taper a bit.

 

bov is on the way.

 

Well. Got the xede to hold boost MUUUCH better. wasn't really the xede, but my car i guess. plus, the way the xede is programmed, is to taper the boost to keep the turbo in its most efficent range maily for road racing.

now my car pulls like a raped ape.

 

how did you fix your problem?

 

put another pill in the line going from the turbo compressor to the "T" that goes to the wastegate actuator.

i don't know if you are familiar with the xede or not, but my boost table is now running 22psi dropping to 19psi at redline in the 30%duty cycle range. if i wanted it to hold 22psi at redline it would, because i have plenty of room to turn the duty cylce up on the table. i have it tapering down because this is my pump gas map. race gas will be 25psi falling to 22psi or so.

butt-dyno is telling me it made quite a difference.

 

hey guys, i'm new to the board, and i own a black evo 2004 and have these mods
-660 injectors
-upgraded fuel pump
-perrin fuel rail
-utec w/map selector
-hks 264/272 cams
-hks cam gears
-wideband o2 sensor
-defi link vsd heads up display
-helix downpipe + cat delete
-borla cat back
-Blitz sbc ID-III boost controller

I'm thinking about selling my utec to go to an xede. The utec is only 3 months old (and will come with the map selector if anyone wants to buy it) I'm thinking about going to the xede (not that the utec is any better or worse). I am currently making 271whp and 264torq on a mustang dyno (stock trim at 211hp)

I'm also selling the helix downpipe for 110$ plus whatever shipping is. (i'm going to do a turbo kit install which will have a different downpipe).

 

Why are you wanting an XEDE? Tuner closer or something?