Intake
August-13th-2002, 06:34 PM
#1
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Intake
A friend of mine recently suggested that I do a cold air intake instead of the intake I have now. Would I notice a big difference in performance? Is it worth It to switch? Any suggestions would be greatly appreciated.
i'm not a performance expert/guru, but i asked about mods because 160hp did seem pretty high. 
August-14th-2002, 07:24 PM
#10
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With the stock intake manifold and VAF, you are probably limited to about 140 hp, even with aftermarket computer.
The CSP Miatas, which can only change intake and exhaust manifolds (no internal changes), are probably at about 170 hp @ 7500-8000 rpms or so. This is with custom intakes, TEC-II or equivalent computer, headers and no Cats.
With 160hp at the crank, and completely gutted interior (ala Turboge's newest beast), and a light driver, you should be into the high-14s, traction limited of course.
The CSP Miatas, which can only change intake and exhaust manifolds (no internal changes), are probably at about 170 hp @ 7500-8000 rpms or so. This is with custom intakes, TEC-II or equivalent computer, headers and no Cats.
With 160hp at the crank, and completely gutted interior (ala Turboge's newest beast), and a light driver, you should be into the high-14s, traction limited of course.
August-14th-2002, 09:48 PM
#12
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Originally posted by macdaddyslomo
raise the flag....cuz i seriously doubt he would be asking intake questions if he did enough mod's to pull anything in the "14's"
raise the flag....cuz i seriously doubt he would be asking intake questions if he did enough mod's to pull anything in the "14's"
You have a point.
I, too, raise the flag.
August-15th-2002, 11:37 AM
#13
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BS? Yes, BS. :P
I'm sorry, but he said all he has done is intake, custom headers, and injectors. I do not see 160whp coming from our engines--or even 160hp at the crank, for that matter--from a simple bolt on header and intake mod. I'm not going to even talk about the injectors, because even if you blue print them and balance them, you'll maybe get 3-4hp more than usual. I am going on the assumption that he is using the stock ecu. You're not going to have a smooth running nor strong running engine by putting 400+ injectors on a stock ECU.
I don't care how custom this header is. There is only so much you can do with a header for a inline-4-cylinder. What the hell could he have done with the intake? I don't see why someone would throw on a miata (which he didn't mention) intake manifold, as there is no room to route the intake hose/VAF/filter on the left side of the engine. If he did, then it would know enough about engines to not be asking about a -cold air intake-. Like I said, macdaddyslomo has a good point.
This just reeks of a oh-I-just-put-on-a-header-and-modified-my-intake-wow-it-feels-like-I-have-160hp-now!-seat-of-my-pants-dyno measurement.
I'd have to be there in person to see the dyno run.
Let's not forget our engines have lower compression than the miatas. I certainly don't see our engines putting out 160 without bumping up the compression and having reground/custom cams.
Oh. I know. Maybe he has one of them new electric superchargers!
Whatever.
I don't care how custom this header is. There is only so much you can do with a header for a inline-4-cylinder. What the hell could he have done with the intake? I don't see why someone would throw on a miata (which he didn't mention) intake manifold, as there is no room to route the intake hose/VAF/filter on the left side of the engine. If he did, then it would know enough about engines to not be asking about a -cold air intake-. Like I said, macdaddyslomo has a good point.
This just reeks of a oh-I-just-put-on-a-header-and-modified-my-intake-wow-it-feels-like-I-have-160hp-now!-seat-of-my-pants-dyno measurement.
I'd have to be there in person to see the dyno run.
Let's not forget our engines have lower compression than the miatas. I certainly don't see our engines putting out 160 without bumping up the compression and having reground/custom cams.
Oh. I know. Maybe he has one of them new electric superchargers!
Whatever.
August-15th-2002, 01:52 PM
#14
The Horns of Jericho
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Re: Re: BS? Yes, BS. :P
Originally posted by PseudoRealityX
Hahaha...im not REALLY believeing him either...but here is some info...
Vaughn's simple just an intake TUBE....stock VAF, stock Throttle Body...everything gained 7whp at the wheels.
SMSP or HyTech complete exhaust systems have gains in the range of 20-25whp on B18C5s.....yes, NOT our cars, but youd be suprised what REALLY well designed headers can do.
My bud Casey up in Atlanta has the SMSP exhaust and jdm header on his GS-R and it put down some VERY impressive numbers on the dyno.
Ive attached a picture of a complete HyTech long tube Tri-Y...notice how damn long this thing is...not your typical header at all. Also notice the tapers, and how the diameter changes. Also the D-shaped tubing near the flange at the top.
Hahaha...im not REALLY believeing him either...but here is some info...
Vaughn's simple just an intake TUBE....stock VAF, stock Throttle Body...everything gained 7whp at the wheels.
SMSP or HyTech complete exhaust systems have gains in the range of 20-25whp on B18C5s.....yes, NOT our cars, but youd be suprised what REALLY well designed headers can do.
My bud Casey up in Atlanta has the SMSP exhaust and jdm header on his GS-R and it put down some VERY impressive numbers on the dyno.
Ive attached a picture of a complete HyTech long tube Tri-Y...notice how damn long this thing is...not your typical header at all. Also notice the tapers, and how the diameter changes. Also the D-shaped tubing near the flange at the top.
Nice... Nice. Yeah, those runners are freakin' long. Looks like all the runners are even lengths, too.
True, well designed headers can do a lot for an engine that needs opening up, but we don't have high compression, we have less than mild cams, and we certainly don't have vtec. So I can see that a header like you pictured will free up 20 or so hp on a B18, but I certainly don't see a header like that freeing up that much hp on our engines without good head work and bumping up the compression a high degree.
I have to go back to mac's point, that if he built an engine to put out 160hp, that same person would know about intakes and how cold air intakes work, and he would especially know how to make/fabricate one.
Then again, maybe he had someone else do the engine work, and he has no clue to what all was done to the car. *shrug*
Oh well.
That's a wicked header, BTW.
August-15th-2002, 03:28 PM
#15
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Just to clarify I did not do any of the work on my car so I cant answer all your questions, be here is what is done to it I will provide more info when I talk to the person who did it for me
Intake, Fuel Injectors, custome Headers (full exhaust) Throttle Body, mild porting of head, . I will provide more information as soon as possible.
Intake, Fuel Injectors, custome Headers (full exhaust) Throttle Body, mild porting of head, . I will provide more information as soon as possible.
Last edited by MGonz; August-16th-2002 at 11:31 AM.