N/A EJ25 power limits
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N/A EJ25 power limits
So, since nobody can tell me to go search the threads (there are none) can anyone tell me if there's a chance in heck of making 200 bhp without serious A/F and spark control and/or cams? I am not opposed to either, in fact they are in plans, but I'm broke and have to pace myself. What can I reasonably expect with simpler bolt-ons? I have already decided on Borla headers, Stromung SS dual tip, Cobb intake and maybe a Random Tech cat, but that's in between the much more important suspension tweeks. Just looking to see if any of you fellas have already been down my path.
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2 words; probably not.
You'll be lucky to get 15-20HP from basic boltons (intake,header,exhaust, pulleys). The main limitation of the EJ25 is heads & cams that weren't designed with high-revving horsepower in mind. Your engine was made for low- to mid-range grunt, and also decent mileage. 200HP is possible with heads, cams, free-flow cat, and boltons.
Borla headers don't make much HP, there's a british company (PDE? I think) that makes a 4-into-1 design that's supposed to be good. Also, it's rumored cobb will make their own headers eventually. I like the looks of MRT headers, seems like a good design.
Borla's sound nice though...
But you really aren't gonna make much progress without headwork & cams, unless you go forced induction.
I say spend the money on tires, harnesses, seats, and maybe lightweight stuff (hood, bumper beams). If you want more power, save for the good stuff, dont' just make your car noisier.
-scott-
You'll be lucky to get 15-20HP from basic boltons (intake,header,exhaust, pulleys). The main limitation of the EJ25 is heads & cams that weren't designed with high-revving horsepower in mind. Your engine was made for low- to mid-range grunt, and also decent mileage. 200HP is possible with heads, cams, free-flow cat, and boltons.
Borla headers don't make much HP, there's a british company (PDE? I think) that makes a 4-into-1 design that's supposed to be good. Also, it's rumored cobb will make their own headers eventually. I like the looks of MRT headers, seems like a good design.
Borla's sound nice though...
But you really aren't gonna make much progress without headwork & cams, unless you go forced induction.
I say spend the money on tires, harnesses, seats, and maybe lightweight stuff (hood, bumper beams). If you want more power, save for the good stuff, dont' just make your car noisier.
-scott-
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Originally posted by N/A
I orignally started out for the N/A build up but moved onto the RS-T since I got a deal on the turbo kit from Shiv. Yep the SCC project white 2.5RS's turbo kit is sitting in my car now.
I orignally started out for the N/A build up but moved onto the RS-T since I got a deal on the turbo kit from Shiv. Yep the SCC project white 2.5RS's turbo kit is sitting in my car now.
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I got mine up to 140 whp and 144 trq with just a intake, brullen header, stromung exhaust, zex plugs, and s-afc.
Got close to 200 with 180 whp and 202 trq with 55 shot of zex nitrous. Was thinkning of going up to 75 just to see.
I also have a dual over head cam system that came with the 98's only
Got close to 200 with 180 whp and 202 trq with 55 shot of zex nitrous. Was thinkning of going up to 75 just to see.
I also have a dual over head cam system that came with the 98's only
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Originally posted by RebelINS
I think that the Cobb heads are designed for top end power. This is why they reccomend raising the red line, because the stock redline is right where it is making power.
-Wes
I think that the Cobb heads are designed for top end power. This is why they reccomend raising the red line, because the stock redline is right where it is making power.
-Wes
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I think you are misunderstanding what I am saying. Cobb redesigns the heads so they flow better. By doing this, along with a few other mods, it moves the curve up, which makes the stock redline inadequate. You are correct about in stock form there is a power fall off.
-Wes
-Wes
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yeah, I forgot to delete the part yyou said about the Cobb heads. They are good, but for that kind of money I'd probably jump straight to forced induction and/or a new car.
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haha j/p, i have a cobb, stromung catback, and had borlas. it is very nice. i like the setup. you won't be disappointed...however imselling the borlas and getting MRT headers/cat, coatin them, and will prob get better perf. out of them since i dun care about CEL no more since i already have one =P
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I think that you can get up to 250 at the crank if we could get a redesigned intake manifold, with an intake, headerback, cams, heads, Engine Management, Phenolic Spacers, Pulleys, improved spark, Walbro, parallel fuel rails, And a redesigned Air Box.
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Originally posted by N/ABeast
I think that you can get up to 250 at the crank if we could get a redesigned intake manifold, with an intake, headerback, cams, heads, Engine Management, Phenolic Spacers, Pulleys, improved spark, Walbro, parallel fuel rails, And a redesigned Air Box.
I think that you can get up to 250 at the crank if we could get a redesigned intake manifold, with an intake, headerback, cams, heads, Engine Management, Phenolic Spacers, Pulleys, improved spark, Walbro, parallel fuel rails, And a redesigned Air Box.