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Old 02-20-2013, 11:02 AM   #1
Leafy
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2006 WRX
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Default TD04 is too small

Car: 2006 Subaru Impreza WRX Wagon
Tuner: Me
Dyno Info: Mustang @ Enhanced Street Performance
Ambient Temp: 45*F
Elevation: about 502' ASL
Transmission: Stock 5MT
Gear: 3rd
Peak HP at RPM: 236whp @ 5650rpm
Peak Torque at RPM: 293ft/lbs @ 3000rpm
Baseline hp/tq for a stock on same dyno: forgot to ask
Target Boost: 18 PSI taper to 12 PSI
Target AFR: 11:1 on 91 octane
Fuel: 93 Octane 10% E


Mods:
Custom Tune
GodSpeed Downpipe lava wrapped
some brand of 2.5" catback
Grimmspeed 3" to 2.5" DP adapter
Grimmspeed TGV deletes
AMR inlet
Ks tech 65mm maf CAI

Yes the boost doesn't hold on the dyno like it does on the street, hence the taper to 9psi up top and not holding 18 as long as normal. And yes the afr graph is a bit weird because I was still tuning the intake in at the time. Thats fixed now as well. Theres a lot on the table still with leaning it out and adding timing, but I have a racecar this is just a daily.

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Old 02-20-2013, 11:16 AM   #2
insaneimpreza
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Its possible they had the vehicle weight set wrong, Ive had that happen on Mustang's a couple of times. How were the AFR's compared to on the street?? Thats usually the give away the load is wrong on the car!
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Old 02-20-2013, 11:19 AM   #3
Leafy
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They were about the same as the street, but I don't have (or even want) enough resolution in the commanded afr table to see a difference in that amount of load. I could have just dynoed in 4th to get more load, but the clutch slips in 4th.
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Old 02-20-2013, 11:40 AM   #4
Dave D.
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I need a new tuner!

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Get a VF39, an STi intercooler/splitter and a retune.
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Old 02-20-2013, 11:42 AM   #5
guroove
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Yup, this is what they do on a 2.5L when tuned. They hit hard at 3,000 rpm and promptly fall on their face.
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Old 02-20-2013, 11:43 AM   #6
Leafy
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We'll see. I might build myself a rotated setup for an EFR later, but evrey time I think that I smack myself, call myself a dumbass and remind myself I have a dedicated racecar.

A bolt on stock location 35-42ish lb/min BB turbo would be kind of nice.
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Old 02-20-2013, 05:27 PM   #7
BlazeRex
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Ha! I've heard of this car. What'd it make at 9:1 AFR?
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Old 02-20-2013, 05:50 PM   #8
SlverEJ20
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yup the TD04 isnt going to make any crazy type of power. I do like the tq you're seeing though. Us with the 2.0 dont get to enjoy those numbers on stock turbo
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Old 02-20-2013, 06:25 PM   #9
Leafy
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Quote:
Originally Posted by BlazeRex View Post
Ha! I've heard of this car. What'd it make at 9:1 AFR?
like 280ftlbs 225hp.
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Old 02-20-2013, 06:47 PM   #10
CatfaceType-R
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Quote:
Originally Posted by Dave D. View Post
Get a VF39, an STi intercooler/splitter and a retune.
This.
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Old 02-21-2013, 04:48 AM   #11
Uncle Scotty
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turn up the boost...let it go to 21psi
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Old 02-21-2013, 07:23 AM   #12
Leafy
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Quote:
Originally Posted by Uncle Scotty View Post
turn up the boost...let it go to 21psi
Not on the stock boost controller.
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Old 02-21-2013, 11:24 AM   #13
BlazeRex
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Boost actually looks decent where it is now. Bumping boost won't really help you too much in the scheme of things, just puts a more of a load on an already failing clutch. I'd work on fueling, the mid-rpm rise is concerning. Also, if you are really holding 12psi to redline, thats on the high end for these cars. I usually see 9-10.

Also, was this car done opensource or cobb?
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Old 02-21-2013, 11:30 AM   #14
Leafy
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The mid rpm rise is gone, that run was after only doing one wack at the maf tuning. Theres more power to be had pulling some more fuel and adding more spark. But with the clutch boarderline I didnt feel like running it on the dyno any more.
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Old 02-21-2013, 11:36 AM   #15
BlazeRex
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You're making good power now. I really dont know how much safe power is left.
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Old 02-21-2013, 01:47 PM   #16
rideAC1
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I like the TD04 for the quick spool advantage. 293 ft-lbs tq is pretty nasty, especially that fast on the powerband. All depends on your use of the car though...as a DD it's your choice. I use mine for autocross mainly so I need the quick spool.
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Old 02-21-2013, 11:32 PM   #17
mod maniac
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I have a fresh td04hl-19t if you want a little more.
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Old 02-21-2013, 11:38 PM   #18
Uncle Scotty
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Quote:
Originally Posted by Leafy View Post
Not on the stock boost controller.


mine does just fine....and ive been runnin it that way since 06
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Old 02-21-2013, 11:39 PM   #19
Leafy
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Quote:
Originally Posted by Uncle Scotty View Post


mine does just fine....and ive been runnin it that way since 06
Ok, not on my setup with the stock boost controller.
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Old 02-21-2013, 11:42 PM   #20
Uncle Scotty
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Quote:
Originally Posted by Leafy View Post
Ok, not on my setup with the stock boost controller.

then maybe ya need to find the broke parts and replace them and be happy with that, then

i run 21psi...have since 06 with the stock boost controller...works just fine....and it makes a difference or i wouldnt be doin it
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Old 02-21-2013, 11:50 PM   #21
Leafy
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I know there is the space on the compressor map to do it, it may even be worth while to push it up to 23psi. But again its the daily, not the racecar.
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Old 02-22-2013, 09:19 AM   #22
BlazeRex
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Quote:
Originally Posted by Uncle Scotty View Post
then maybe ya need to find the broke parts and replace them and be happy with that, then

i run 21psi...have since 06 with the stock boost controller...works just fine....and it makes a difference or i wouldnt be doin it
Everyone has thier opinion on this. I would leave boost around 18-19, thats a good place to be for a daily/stock clutch. If you wanted a huge neck snapping torque spike, 21+ would help that. And it is possible to run 21 psi on a cranked up actuator.
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Old 02-22-2013, 09:49 AM   #23
wrxstage2
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Man these # r high as hell 18 lbs and u got 300 lbs of tq I call bull**** run that car on another dyno
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Old 02-22-2013, 09:57 AM   #24
Leafy
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Quote:
Originally Posted by wrxstage2 View Post
Man these # r high as hell 18 lbs and u got 300 lbs of tq I call bull**** run that car on another dyno
You're kidding right? I know for a fact this Mustang dyno reads ~10% lower than a dynojet with the weather station on. I'll go run it on the dynojet 15 minutes from my parents house that I went to the last time I dyno'ed a car at ESP and was disappointed with the numbers. Without a doubt I could produce a dynosheet from that dynojet with 320-330 ftlbs and 260-270hp. But I dont have anything to prove to some dude on the internet, I'm not trying to sell myself as a tuner here.

Last edited by Leafy; 02-22-2013 at 10:34 AM.
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Old 02-22-2013, 10:29 AM   #25
wrxstage2
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I looked up some dyno sheets ur right # aren't bad it's just nuts they hit 300ftlbs I got a vf48 on a 06 tr with sti tmic, Cobb dp catless, Cobb cat back, Cobb sf intake, forge bpv, Cobb ap efi's tune nets me 284whp/334wtq love that tune but I got a Clark turner map set at 22lbs of boost I need to get dynoed cause I gotta b making well over 300 whp maybe ill try virtual dyno even though I hate those
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