View Full Version : Ej207 + XS450 + Uppipe Leak + Bad plugs on Dyno
Javier 12-07-2004, 05:47 PM So I went to the Dyno on friday and here's what I got... 360whp, 302 ft-lbs @ 23psi on 93 octane
I had a few problems holding me back from making more power.
1) I had a huge leak at the flange to my external wastegate from my uppipe (probably due to blowing out the gasket on my way to the dyno ) This is without a doubt why my turbo is spooling so slowly right now (~700 rpms later than what I was getting before) After doing some reading apparently the gaskets that are supplied with the Tial wastegate are garbage (so i noticed). Tial themselves says to use the gaskets from the turbonetics unit, so i ordered those already.
2) I need colder plugs. Junior was pretty adamant about the fact that with 1 step colder plugs I could run more timing and pick up some big power up top aside from the power I would get from fixing the leak I have. The ej207 loves a lot of timing and I can't run it with the plugs I have. I ordered a set of NGK Iridiums in the 8 heat range. Should have those in soon.
Over all, I'm pretty happy as far as how things have progressed thus far. Having over 300whp at 8k rpms is rediculously fun. I can't wait to get my issues worked out and my ra gearset in!! :banana:
http://www.clubwrx.net/forums/attachment.php?attachmentid=42161&stc=1
Mods:
STI V7 EJ207 Motor
Ultimate Racing Uppipe
Tial 38mm External Wastegate
XS Engineering 450 Turbo
XS Engineering 800cc Injectors
APS D/R 500 Frount Mount Intercooler
APS DR Series FRP/01 Race Fuel System
TurboXS UTEC
TurboXS Short Ram Intake
Autospeed Lightened Crank Pulley
STi RA TGV Deletes/Manifold Risers
InfamousDX 12-07-2004, 05:56 PM NOT bad at all for the problems you had (they're major tuning ones obviously). Good luck next time :)
TypeC 12-07-2004, 06:05 PM nevermind
Javier 12-07-2004, 06:29 PM NOT bad at all for the problems you had (they're major tuning ones obviously). Good luck next time :)
Thanks. The problems were kinda stupid ones too. Like I said, the gasket blew out on my way to the dyno which was kinda crappy, but stuff happens. The plugs I totally brainfarted on. oh well...
onesillyracer2k2 12-07-2004, 06:43 PM your car sucks steve lol jk
PerverT 12-07-2004, 07:05 PM What's your AFR after ~5000 RPM (it's hard to see)? Based on the one or two other dyno sheets I've seen from TurboTrix, it seems like Junior likes to run close to 12.0:1.
That car must be a lot of fun! Be sure to let us know what happens with the colder plugs.
Jimbo 12-07-2004, 09:44 PM Are 8 heat range plugs going to be cold enough? I would assume at your power levels that 7 would be perfect.
Jimbo
Junior2JZ 12-07-2004, 10:08 PM What's your AFR after ~5000 RPM (it's hard to see)? Based on the one or two other dyno sheets I've seen from TurboTrix, it seems like Junior likes to run close to 12.0:1.
That car must be a lot of fun! Be sure to let us know what happens with the colder plugs.
The AFR is largly dependent on the setup the car is running. Not all the cars will leave at the same AFR...
Steve will fix her all up... just talk to rich abut the dyno tme.
cronic 12-07-2004, 10:31 PM Are 8 heat range plugs going to be cold enough? I would assume at your power levels that 7 would be perfect.
Jimbo
8 is colder than 7..
For what its worth, i had no problems in my ej207 with a nice set of NGK iridiums in heat range 7..
Javier 12-08-2004, 02:24 AM What's your AFR after ~5000 RPM (it's hard to see)? Based on the one or two other dyno sheets I've seen from TurboTrix, it seems like Junior likes to run close to 12.0:1.
That car must be a lot of fun! Be sure to let us know what happens with the colder plugs.
My AFR are right around 11:1 for the most part. It's pretty solid around that point.
As far as the plugs, we could tell on the dyno that the plugs I had weren't enough. It's possible that running around untuned for a while might have messed with the plugs that are in there (ngk copper 7). When I get the new ones and pull these i'll be able to tell what's going on.
Timdog1650 12-08-2004, 11:52 AM My AFR are right around 11:1 for the most part. It's pretty solid around that point.
As far as the plugs, we could tell on the dyno that the plugs I had weren't enough. It's possible that running around untuned for a while might have messed with the plugs that are in there (ngk copper 7). When I get the new ones and pull these i'll be able to tell what's going on.
Very likely indeed, I'll tell you by the end of the week what my results were too, but I think running v7 heads on a USDM WRX head-based map really messes with your ignition system, to the point where basic maintenance is necessary.
*tick, tock, tick, tock, tick, tock, tick, tock*
^the sound of your tranny counting down....^ :lol:
Kwyjibo 12-08-2004, 02:14 PM do you have the dyno sheet?? Or can you post one up once you get all those issues resolved?
I'd love to see the power curve.....
How does that external wg sound?? :devil:
Need4Boost 12-08-2004, 03:02 PM do you have the dyno sheet?? Or can you post one up once you get all those issues resolved?
I'd love to see the power curve.....
How does that external wg sound?? :devil:
Its in his first post. ;)
http://www.clubwrx.net/forums/attachment.php?attachmentid=42161&stc=1
Kwyjibo 12-09-2004, 01:29 PM Its in his first post. ;)
http://www.clubwrx.net/forums/attachment.php?attachmentid=42161&stc=1
DOH!
Now that i've seen the before, I can't wait to see the after :)
scooby 12-11-2004, 03:01 AM was the avcs active??
Javier 12-11-2004, 12:42 PM was the avcs active??
No, as of yet I have no avcs. :(
StiDreams 12-11-2004, 01:25 PM Hey Javier,
Where's your up-pipe leak at? If it's between the turbo and up-pipe it's going to be a bugger to fix. The XS-450 flange is much bigger that the OEM turbo. The bracket on the inside near the transmission that holds the up-pipe to the engine hits the flange and makes it impossible to seal. The fix was simple enough. I removed that brace and ground 1/8" off of it. The bugger is that to get that bracket off the up-pipe has to come out.
Sunrise City Rider 12-11-2004, 01:36 PM You're gonna have a wastegate leak with the Fire Ring gasket as well...To stop all wastegate leaks, BOLT THE GATE ONTO THE FLANGE WITHOUT A GASKET...Thats right, no gasket is the key to ending leaking gates...Oh and your gate's bolts will also come loose with a gasket...
Javier 12-11-2004, 03:13 PM Hey Javier,
Where's your up-pipe leak at? If it's between the turbo and up-pipe it's going to be a bugger to fix. The XS-450 flange is much bigger that the OEM turbo. The bracket on the inside near the transmission that holds the up-pipe to the engine hits the flange and makes it impossible to seal. The fix was simple enough. I removed that brace and ground 1/8" off of it. The bugger is that to get that bracket off the up-pipe has to come out.
That bracket is long gone ;) The leak is actually at the uppipe to wastegate junction.
Sunrise... I should go with no gasket?! Hmmm... I'm gonna try the fire-ring gasket first before I do that. You may very well be right, but I'm gonna try it before I immediately rule it out. Thanks for the heads up though....
Hopper 12-12-2004, 02:53 AM Yes no gasket works great, but just make sure the mating surface is flat and use copper silicone sealant. The best would be copper gaskets.
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