Legal high power setup
I've been piecing my ideas together and have decided to stay away from taking out any of the cats, period.
With that said, I've been thinking about going with some mods and am wondering what kind of numbers you think it will give me.
- VF34 (requisite pump and injectors)
- Engine Tuning (probably UTEC)
1) With that and maybe a cat-back, what do you think I would be able to pull on a chasis dyno? I'm thinking tops 250 whp.
2) What effect do you think these will have on emmissions (in Va., but tests are similar to Cali.).
Thanks for the input,
Chris
With that said, I've been thinking about going with some mods and am wondering what kind of numbers you think it will give me.
- VF34 (requisite pump and injectors)
- Engine Tuning (probably UTEC)
1) With that and maybe a cat-back, what do you think I would be able to pull on a chasis dyno? I'm thinking tops 250 whp.
2) What effect do you think these will have on emmissions (in Va., but tests are similar to Cali.).
Thanks for the input,
Chris
Chewwwwy
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i think 250 whp is doable with the cats in. you should be able to pass emissions no sweat. if it is an ecutek reflash, you can have it flashed for smog also.
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
I know you said that you would not want to remove any cats, but i have heard but never seen any proof that the uppipe cat is known to come apart over time. Maybe a gutted uppipe (which will not feel as smooth) or atleast an aftermarket uppipe. Other than that i too will be looking foward to see what kinda numbers you put out. good luck, mario
:banana:
:banana:
I live in VA and I have the turboxs stage 4 with tmic and only 1 high flow cat that came with their turbo back exhaust and I passed VA emissions easily. Just a thought, but you can get away without the cats here if you at least have the 3" highflow on, and I even passed inspection too. Maybe this will help you some.
Kevin
Kevin
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If you are willing to wait, Garret Boosting is making a kit for the WRX. They just finished testing the kit. My friend is a design engineer for them and he told me they are making it so it is a legal setup. I don't know how much it costs yet. He didn't tell me the turbo specs on it, either. He did tell me that they were getting around 250-260whp out of it. The car was stock except for the aftermarket kit.
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If your looking to keep your cats you could get a downpipe and uppipe with a high flow cat in it. http://www.xcceleration.com/itemdetails.cfm83.htm
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Get a JDM non-catted uppipe and nobody will ever know that it's not catted but you....you could cut the probe end off a stock EGT probe and install it and just wire the connector up with a resistor in the plug, all stock looking....
That would take care of the uppipe quite nicely I should think.
This is what I would do if emissions testing were required where I lived.
That would take care of the uppipe quite nicely I should think.This is what I would do if emissions testing were required where I lived.
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
Is the JDM uppipe the same as a USDM gutted uppipe. i can take pics of my old gutted uppipe inside can someone provide pics inside a JDM uppipe??
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No...the JDM pipe looks very much like the USDM uppipe on the outside but no cat inside, Japan market never had one in the uppipe...smooth as a babies *** inside
Somebody would have to know EXACTLY what the differences were to tell the difference from the outside.
An EXCELLENT stealth mod

Somebody would have to know EXACTLY what the differences were to tell the difference from the outside.
An EXCELLENT stealth mod
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
Thats not what im saying. im saying that the USDM uppipe has a slight bulge in it. It can be slighty turbulant to the flow. i'm speaking from experince. I had a gutted uppipe for 6 months then switched to the helix w/ a flex and WOW the smooth power delivery was amazing. thats it
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Mario's question:
"Is the JDM uppipe the same as a USDM gutted uppipe."
My answer:
No...the JDM pipe looks very much like the USDM uppipe on the outside but no cat inside, Japan market never had one in the uppipe...smooth as a babies *** inside
Somebody would have to know EXACTLY what the differences were to tell the difference from the outside.
An EXCELLENT stealth mod.
I thought you were asking a question....and I was hoping to answer it...If I needed to maintain the stock, OEM look...I would use a JDM non-catted uppipe.
"Is the JDM uppipe the same as a USDM gutted uppipe."
My answer:
No...the JDM pipe looks very much like the USDM uppipe on the outside but no cat inside, Japan market never had one in the uppipe...smooth as a babies *** inside
Somebody would have to know EXACTLY what the differences were to tell the difference from the outside.
An EXCELLENT stealth mod.
I thought you were asking a question....and I was hoping to answer it...If I needed to maintain the stock, OEM look...I would use a JDM non-catted uppipe.
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
I was asking a Q. thank you for anwering it. i'll take some pics tommorrow to show you what im talking about in the inside of the uppipe.
Haha, you all definately love switching the pipes.
I heard about the uppipe coming apart and am kind of concerned about that especially since Ill be changing stuff around the turbo. But I really cant drive around with an illegal car due to my job. Wouldn't set a good example.
03blau, any more info on the Garrett would be appreciated, thanks.
Chris
I heard about the uppipe coming apart and am kind of concerned about that especially since Ill be changing stuff around the turbo. But I really cant drive around with an illegal car due to my job. Wouldn't set a good example.
03blau, any more info on the Garrett would be appreciated, thanks.
Chris


