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Old 05-21-2009, 06:36 PM   #26
wrx-chris
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Quote:
Originally Posted by RiftsWRX View Post
I don't even know where you guys are comparing the Saab vs this car?

This car is running less boost, due to a more restrictive setup, and due to a cooling deficiency. Add ~97% IDC's. I don't know where the armchair tuner thinks anyone is responsibly going to try and push more out of a setup...

Give me a better IC, and 20-21 PSI on the bottom end and you'll see 350 lb/ft of torque on a different car.

You guys really can't compare one car to another. Just use it as a general guide.

Jorge (RiftsWRX)
www.ProjectWRX.com
wasn't comparing....just noticed the number potential on the saab
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Old 05-21-2009, 06:40 PM   #27
wrx-chris
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Originally Posted by Tucker587 View Post
Yes same dyno (dynojet IIRC), as for the loss in torque... the 324tq achieved in my previous tune only lasted for so long before it dropped drastically. The 280 torque i put down on this tune holds for about 3k rpm more lol. As I write this im in the process of scanning the two dyno sheets. Ill keep u guys updated in about 10 minutes so you can see the differences yourselves.

that's awesome....this get's me pumped up to finish my project!!
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Old 05-21-2009, 06:58 PM   #28
RiftsWRX
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Yeah, ultimately, remember, you make maximum torque at 1 RPM.

Soooo, the faster something spools, the more "torque" you can make, because you're producing more "twist", which is what torque fundamentally is.

Jorge (RiftsWRX)
www.ProjectWRX.com
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Old 05-21-2009, 07:13 PM   #29
Steve.804
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^if only more people realized that! Torque that is LATER in RPM is better for acceleration as it allows you to take advantage of your gearing! My protuned 07 STI (same turbo) makes 340awtq but that's because it's 22psi at 3k RPM

Quote:
Originally Posted by arch4life View Post
seems right on track for 17.5-18 psi. could he not push any more psi? was that why he was crushing the bpv?

as far as identical to vf39, it is, except the wastegate is sprung a bit stiffer, thats why people say it holds better to redline.

you can do the same thing with a vf39 with a wastegate helper spring, or even a vf30, 34, 43, etc. (mebbe the 43 is sprung heavier too) top end flow is exactly in line between my vf30 and my vf39, same flow. verified via logs.
The VF-43 has the stiffer spring so I assume the vf-48 does too. I'm also pretty sure the vf-48 has a larger turbine housing which will allow it to hold to redline better than the other vf-series turbos.

I'm also curious as to why you crushed the BPV Jorge? Obvious there are a few needed parts to make more power, so what were you trying to or what did you achieve by doing this?

Congrats to the OP for the new power! Get the needed parts to let Jorge make some REAL jam with that turbo!
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Old 05-21-2009, 07:33 PM   #30
Tucker587
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Ok having problems w my scanner. Gonna try this at a friends house in a few srry for the delays! Thanks Jorge for chiming in, ur much better at explaining things than I am thats for sure lol. Seems to make more sense when I read your posts instead of mine. Hang on there fellow scoobarooers, this will be posted tonight!
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