I/h/e Question
Senior Member
Joined: Nov 2002
Posts: 4,694
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I still have 4-2-1 headers on my auto XD and they kick in at about 3500rpms or so and all the way till it shifts! XD used to have a catback with a straight through muffler, now it has a catback with stock muffler.
I think with 4-1 header that I had on stock exhaust on my 5sp RD I felt power after 4k rpms all the way till I shifted.
I think with 4-1 header that I had on stock exhaust on my 5sp RD I felt power after 4k rpms all the way till I shifted.
Senior Member
Joined: May 2005
Posts: 1,141
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From: Chicago, IL
My personal plan is to do this in 3 stages.
1) Install the AEM intake (lying ready to install tomorrow)
2) Then, install the Airram Intake Manifold (Also lying around, waiting for money to pay Monoxide for helping me with it if I decide not to sell it)
3) Finally, get the full exhaust done. Maintec Headers, High Flow Cat + Apexi Catback.
4) Replace with Iridium plugs + Magnecor wires
Once thats done, Im expecting the car to make 160 HP at the crank. Not too unreasonable?
For all you gurus, how much HP do you think each step will yield? i.e. 1) then 2) then 3)
1) Install the AEM intake (lying ready to install tomorrow)
2) Then, install the Airram Intake Manifold (Also lying around, waiting for money to pay Monoxide for helping me with it if I decide not to sell it)
3) Finally, get the full exhaust done. Maintec Headers, High Flow Cat + Apexi Catback.
4) Replace with Iridium plugs + Magnecor wires
Once thats done, Im expecting the car to make 160 HP at the crank. Not too unreasonable?
For all you gurus, how much HP do you think each step will yield? i.e. 1) then 2) then 3)
Senior Member
Joined: May 2006
Posts: 4,722
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Vehicle: 2001 Hyundai Tiburon
1) AEM varies from person to person depending on the car and such. (Please don't turn it into a fight about AEM like the other topics <_< ). AEM's dyno shows very good gains in the midrange and slight gains in the topend. Thats what I would expect, and thats where I felt gains. Topend really didnt change too much for me.
2) Bore out the TB while you have it out. That way you will get complete gains. This is a modification I can't really guess on, as I don't have a larger Intake Manifold on a Tib. Expect more mid-high range power because of how it is designed. How much I dunno.
3) Expcet a good jump from the full exhaust setup. The stock setup isn't very well manufactured or designed.
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As for your goal of 160 to the crank, thats more than realistic. Probably really low. A good shaped Tib should make 130-145 to the crank stock. Coupled with the Air-Ram and a free-flowing exhaust, top-end power should be greatly increased. Expect maybe 160-175 to the crank.
2) Bore out the TB while you have it out. That way you will get complete gains. This is a modification I can't really guess on, as I don't have a larger Intake Manifold on a Tib. Expect more mid-high range power because of how it is designed. How much I dunno.
3) Expcet a good jump from the full exhaust setup. The stock setup isn't very well manufactured or designed.
----
As for your goal of 160 to the crank, thats more than realistic. Probably really low. A good shaped Tib should make 130-145 to the crank stock. Coupled with the Air-Ram and a free-flowing exhaust, top-end power should be greatly increased. Expect maybe 160-175 to the crank.