Modding for power gains on a budget.....
Adding 70 after a tune is tough. If you're in a part of WI with E85 then that's a nice bang for the buck. It's around 40hp/tq. I consider the Cobb OTS tunes a bit tame...would recommend 1000cc injectors and a protune instead.
Adding a larger turbo without a number of supporting mods is tough. You'll only get half the power that you see other people get if you try to take the cheap approach--the stock injectors will not be adequate even on pump.
The stock turbo on E85 feels pretty beastly since you make more torque than hp. The stock clutch is also at the limit at this point...
Adding a larger turbo without a number of supporting mods is tough. You'll only get half the power that you see other people get if you try to take the cheap approach--the stock injectors will not be adequate even on pump.
The stock turbo on E85 feels pretty beastly since you make more torque than hp. The stock clutch is also at the limit at this point...
Evolving Member
Joined: Feb 2006
Posts: 168
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From: Santa Maria, CA
I have always been a believer that the cat was the biggest restriction but I was told today that the cat back was by a reputible shop, and that the cat was not that big of a restriction, I have always thought that the cat back was primarily for sound and looks while the test pipe was for gains, but I have also not tuned 100s of evo x's either....
Any other thoughts on the exhaust's biggest restriction?
Any other thoughts on the exhaust's biggest restriction?
i got my X tuned and as the sig states i got 340 whp because im running a test pipe... so i guess to generalize a test-pipe was about a 20whp difference...
Thanks for all of the comments guys. I think that I'm going to be going with the AMS DP, ETS test pipe, ETS V2 Cat back, K/N drop in, 800 DW injectors, 255 wb fp, and Cobb AP tune. Down the road a pro-tune. As a birthday present to myself in May. These mods are also easier to convience the wife with as well because they will ultimately pay for them self. E85 here in WI is $2.10 a gallon where I am paying close to $2.80 a gallon for 91+. It will take about three years to pay for it's self in full if the prices stay at the same rate. And the smiles on my face from the extra ponies will make those three years that much happier.
Last edited by doghead; Mar 13, 2010 at 07:50 AM.
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Joined: Feb 2010
Posts: 12
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From: Pittsburgh, PA
Thanks for all of the comments guys. I think that I'm going to be going with the AMS DP, ETS test pipe, ETS V2 Cat back, K/N drop in, 800 DW injectors, 255 wb fp, and Cobb AP tune. Down the road a pro-tune. As a birthday present to myself in May. These mods are also easier to convience the wife with as well because they will ultimately pay for them self. E85 here in WI is $2.10 a gallon where I am paying close to $2.80 a gallon for 91+. It will take about three years to pay for it's self in full if the prices stay at the same rate. And the smiles on my face from the extra ponies will make those three years that much happier.
You do realize you use more E85 then 91+? That's why you need to upgrade the fuel pump and injectors...
If I recall correctly its something like 27% more so at $2.10/$2.80 E85 might actually end up costing you more than 91+ in the long run...
Last edited by smajin; Mar 13, 2010 at 08:47 AM.
Hmmmm.... I did not realize that. So then it may never pan out, it would take 310k miles to break even at the 27% more burn. If they burnt at the same usage rate it would take about 62k to recoupe all the investment. But at least I would be getting some return on investment along with the pleasure and you can never put a price on having fun....
