XDIRTYX
New member
and....
STi EJ257 short block going in!
- Thread starter Ryan
- Start date
Ryan
New member
Just under 250whp / 300tq (it was hotter than hell out during the tune)
-=Lobstah=-
Active member
Shouldve taken you up on that bet
TheNailman
Warcock
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diabloadsit
New member
I still don't trust this "road tune" whp/tq number.
Now the tune done on the road is the way to go far as a good finsher. Most good tuners will use the dyno to get the car pretty much there. Then the road tune to make sure the car reacts the same on the road as it does on the dyno.
I have been through about 5 protunes all of which we have followed up with a road test and tweak. All of which I have set in the passengers seat and held the tuners laptop for them. As steady as possible as the beat the piss out of the car and check for any knock or anything.
Lets say the "Road Dyno" is pretty close. The TQ number looks pretty good. not to far off my mark. Now the HP is another thing.
What was the 02' wrx rated at far as HP from the factory anyways?
Now the tune done on the road is the way to go far as a good finsher. Most good tuners will use the dyno to get the car pretty much there. Then the road tune to make sure the car reacts the same on the road as it does on the dyno.
I have been through about 5 protunes all of which we have followed up with a road test and tweak. All of which I have set in the passengers seat and held the tuners laptop for them. As steady as possible as the beat the piss out of the car and check for any knock or anything.
Lets say the "Road Dyno" is pretty close. The TQ number looks pretty good. not to far off my mark. Now the HP is another thing.
What was the 02' wrx rated at far as HP from the factory anyways?
Ryan
New member
02-05 WRX WHP stock is around 170 (225 at the crank)
woodys77
New member
its only a tdo4.....give it some credit.lol
woodys77
New member
ryan,
how does the car feel?
how does the car feel?
Ryan
New member
Like night and day compared to the 2.0L that's for sure. The torque feels nice
As far as the road dyno numbers, he has tested his road graph numbers to dyno numbers and they are always within 3 points or so with each other. That's pretty impressive I'd say.
250whp/300tq at 17.5 psi has the TD04 at it's max power potential. He was pretty impressed with how the car performed with it.
As far as the road dyno numbers, he has tested his road graph numbers to dyno numbers and they are always within 3 points or so with each other. That's pretty impressive I'd say.
250whp/300tq at 17.5 psi has the TD04 at it's max power potential. He was pretty impressed with how the car performed with it.
woodys77
New member
did you guys see any knock?
Ryan
New member
^That was the best part about this entire tune, absolutely NO signs of knock! (even with the base map he had sent me via email before the road tune). He was pretty shocked to see this since almost every Hybrid motor he sees shows some degree of knocking. Hybrid motors are prone to knocking. The entire tune went so smoothly with no problems anywhere whatsoever. The car is super healthy and happy
.
woodys77
New member
do you have any way of logging now?
Ryan
New member
Well, I've been borrowing iaghtnoob's Tactrix cable when I needed logs... but I really need to get my own cable.
woodys77
New member
try logging when you get gas at random stations, it might scare you. Ive found shell to be the worst gas around i filled up there and did a log i had -8.6 kc at wot.
diabloadsit
New member
I am glad it is running well for you man.
I thought the early wrx's threw down more power than that at the wheel stock.
I thought the early wrx's threw down more power than that at the wheel stock.
Nate
Founding Father
Yah, Its only a 2.5l (hybrid) motor with a TD04. Its not Magic.
On a side note. I'm reading you're running a hybrid setup. Meaning you have your old 2.0l heads on the 2.5l block? that's not really a EJ257 block then..
The last numbers correspond to version heads that are on the block. Meaning the "EJ" series motor, "25" 2.5l block, and "7" is a 7th revision heads. I run a EJ257 block with dual AVCS. Im guessing you don't have that setup.
On a side note. I'm reading you're running a hybrid setup. Meaning you have your old 2.0l heads on the 2.5l block? that's not really a EJ257 block then..
The last numbers correspond to version heads that are on the block. Meaning the "EJ" series motor, "25" 2.5l block, and "7" is a 7th revision heads. I run a EJ257 block with dual AVCS. Im guessing you don't have that setup.
Ryan
New member
Nope no AVCS.
All builds similar to what I did are considered EJ257 Hybrids. There is the EJ255 short block which uses a different domed piston, then their is the EJ257 short block.
All builds similar to what I did are considered EJ257 Hybrids. There is the EJ255 short block which uses a different domed piston, then their is the EJ257 short block.
diabloadsit
New member
The pistons are for sure diffrent.
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BG @ BrenTuning
Custom Tuning ECUs
That is incorrect, ALL 2.5L USDM turbo cars had AVCS. And the EJ255 had slight different cams and heads as well.
BG @ BrenTuning
Custom Tuning ECUs
For those that don't trust road tunes please look into the extensive history of the airboy sheet and how proven it is. It reads 4hp lower then PSi's Dynapack, and a whopping 10HP lower the ESP's mustang dyno. Both done same day. I've verified this with over 10 different Subarus.
Let alone the other 1000 people using Airboy
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Let alone the other 1000 people using Airboy