Here's a Dyno Plot from a car that we had come in a few weeks ago.

http://www.turboxs.com/_images/dynoplots/375whppump.jpg
http://www.turboxs.com/_images/dynoplots/375whppumpboost.jpg

Custom To4 Turbo
Custon FMIC (Spearco Core)
Full Exhaust (catless)
Tial W/G
UTEC
700cc Inj. ????
Custom Fuel Rails
Stock FP
USDM STI Block
Stock WRX heads and Cams

This car was on pump gas and we ran out of injector so we stopped.

Jermaine@turboxs.com
www.turboxs.com

Wow, that is awesome:eek:

Nice numbers.:D..what kind of boost pressure was that at. That t04 looks laaaaggy.

The car running out of injectors, is that why the power still drops off bad after 6K? Just trying to figure it out.

Originally posted by John Sever
Nice numbers.:D..what kind of boost pressure was that at. That t04 looks laaaaggy.

The car running out of injectors, is that why the power still drops off bad after 6K? Just trying to figure it out.

Yes it is laggy.

The wrx stock cams are no good for a 2.5L motor. If you want to have king stump puller maybe they are ok for you, otherwise anyone considering a 2.5L block should look into Stock STI Cams at the very minimal.

We did run out of injector but we are still at a tame 11.5 afr by redline but as you see, we are hitting peak boost at redline but we are way down on power due to the camshafts.

Jermaine~
www.turboxs.com

Those inecjtors should be able to support way more power than that. What's the deal?

Originally posted by ratt_finkel
Those inecjtors should be able to support way more power than that. What's the deal?

The deal is that we really don't know what injectors were on the car. The shop said they were 700cc. Clearly they were not. They acted more like a 600cc injector.

-Nathan
www.turboxs.com

Nice numbers. I wonder what the specs were on the T04E

Does the owner not want to reveal himself. If not can you say what color car it was?

Nice freaking numbers btw. Is he coming back for race gas....or is that undecided?
:)

Nice... I LOVE seeing all of these big numbers from 257 blocked cars!! Jermaine tell him to keep you guys posted on how she holds the power please. Congrats to him and whomever tuned the car(Nate or Jermaine)!!

Richard

Originally posted by eightballrj
Nice... I LOVE seeing all of these big numbers from 257 blocked cars!! Jermaine tell him to keep you guys posted on how she holds the power please. Congrats to him and whomever tuned the car(Nate or Jermaine)!!

Richard


You guys should cut a 257 apart. I think you’ll see some very interesting things that will make you feel much better about the strength of the block.

I am the first to admit when I am wrong. I was wrong about the 257.

-Nathan
www.turboxs.com

Nathan, I was one of the people when everyone said that the block was a pos saying that we should wait and see what numbers turn up and how everything goes with them. I thought that the little things that Subaru did to that motor that they didnt do to other motors that they have built made it special. But, we will see how long they last before I put my foot in my mouth :). Thanks though!

What size Tial did they use.

I have no idea but a 38mm would be enough to run that setup I assume. Although you could go for broke and get the 44mm :). I just think its cool as hell that you all made all that power on such low boost!!

Originally posted by nmyeti
You guys should cut a 257 apart. I think you’ll see some very interesting things that will make you feel much better about the strength of the block.

I am the first to admit when I am wrong. I was wrong about the 257.

-Nathan
www.turboxs.com

Cool.....I for one can't wait to see how sponaugle does with his AVO600/GT35R.

FSU

Originally posted by mikaust
What size Tial did they use.

40mm Tial

Originally posted by eightballrj
Nathan, I was one of the people when everyone said that the block was a pos saying that we should wait and see what numbers turn up and how everything goes with them. I thought that the little things that Subaru did to that motor that they didnt do to other motors that they have built made it special. But, we will see how long they last before I put my foot in my mouth :). Thanks though!


Marco up in Canada has cut a few of these apart to see what Subaru has improved. He has very good things to say, and the results that we've seen out of this block seem to be in line with his observations. The stock pistons are the only real weak point.

-Nathan
www.turboxs.com

Guys,

I'm assuming that figure is on a hub Dyno not on a roller Dyno with the wheels on?

We've completed our first two EJ257 conversions down here in Australia and run them in, Friday we get to power tune them and turn the boost up.. should see some nice numbers... one running a PE1820 the other gets the FPgreen20g bolted on before the tune. (both cars running UTEC)

**watch this space** :banana:

But would you say that the pistons are the WEAK point with a good tune?? I mean to say... they stand up to the horsepower great right? Its the det that you get from a bad tune that gets you bad results, correct?

Richard

The pistons are shaped kinda funny, and might not be as det resistant as CP's. I think that is what Nmyeti might be trying to say. Plus the wristpin is HUUUGE and heavy. Otherwise, like Crawofd told me: if you're looking for 400hp or less, stock pistons are totally fine.

One thing that worried me a little about the stock shortblock was the shape of the top of the rods. They taper substantially at the pin end, but I suppose looks can be deceiving!

Originally posted by nmyeti
Marco up in Canada has cut a few of these apart to see what Subaru has improved. He has very good things to say, and the results that we've seen out of this block seem to be in line with his observations. The stock pistons are the only real weak point.

-Nathan
www.turboxs.com

He loves to pull them apart, but assembly is not his thing. It took him 10 weeks to machine and reassemble my block. Very slow. Then he shipped the motor back w/o the oil pump!

Originally posted by silverstipa
He loves to pull them apart, but assembly is not his thing. It took him 10 weeks to machine and reassemble my block. Very slow. Then he shipped the motor back w/o the oil pump!

If you got it in 10 weeks you did a lot better then I did on this last motor. It's been almost a year now. The motor finally showed up this week.


-Nathan

Originally posted by nmyeti
If you got it in 10 weeks you did a lot better then I did on this last motor. It's been almost a year now. The motor finally showed up this week.


-Nathan

That is really sad. I know I will never recommend them to anyone.

Marco does awesome work, but you have to wait on it.

Originally posted by nmyeti
Marco does awesome work, but you have to wait on it.

That is why I went to him in the first place. I guess that better communication would have gone a long way.

I apologize for hijacking this thread.