R18 mods

crxlvr · 07-31-2007, 09:24 AM

Ok im getting confused with all these parts that are being dyno'd, some are making power while others are, in some cases losing power. Obviously my r18 sedan isnt gonna win any races without forced induction, but i have an 8month old son and a wife who can barely drive an automatic.

Anyway, im looking to add some power to this car, so does anyone know an i/h/e setup that would actually make power and sound decent?

black07coupe · 07-31-2007, 10:40 AM

Quote:

Originally Posted by crxlvr

Ok im getting confused with all these parts that are being dyno'd, some are making power while others are, in some cases losing power. Obviously my r18 sedan isnt gonna win any races without forced induction, but i have an 8month old son and a wife who can barely drive an automatic.

Anyway, im looking to add some power to this car, so does anyone know an i/h/e setup that would actually make power and sound decent?

There's not much you can do right now... you can go with a cat-back exhaust, that will give you decent gains, other than that, I wouldn't really touch it. You can make it handle better :)

If you believe the guys who swear by intake, go grab yourself a CAI or SRI, personally I don't think either will give you noticable gains. What ppl claim are gains, are really just their imagination givin them more HP cause their engine sounds meaner.

audiophile · 07-31-2007, 10:53 AM

NST pullies...

best bang for your buck.

black07coupe · 07-31-2007, 10:58 AM

Quote:

Originally Posted by audiophile

NST pullies...

best bang for your buck.

Oh ya, forgot about those.

crxlvr · 07-31-2007, 11:25 AM

well i do have a front upper strut bar, and wider wheels/tires with the si rear sway on order, so im happy with the handling. so freeing up HP is my next if not last goal. nst pullies i did read about and i will def get those. sounds like the greddy ti-c is the best exhuast too, but have seen no clear choice as to a good intake or header(not sure if anyone even makes an r18 header) any names guys?

black07coupe · 07-31-2007, 11:43 AM

Quote:

Originally Posted by crxlvr

well i do have a front upper strut bar, and wider wheels/tires with the si rear sway on order, so im happy with the handling. so freeing up HP is my next if not last goal. nst pullies i did read about and i will def get those. sounds like the greddy ti-c is the best exhuast too, but have seen no clear choice as to a good intake or header(not sure if anyone even makes an r18 header) any names guys?

Theres actually a thread saying that the stock header is pretty good, so it's prolly not worth it to drop 200 bucks on a header. Also, that thread states that intake does not show gains. I think your best bet would be to do the poor mans mugen icebox, that has proven gains on the dyno

mO 64 StAnG 06 · 07-31-2007, 02:51 PM

Well, since their isn't any header for the car the stock is going to have to do. No way in changing out the exhaust manifold from the engine.

But buying the Weapon R "header" is basically eliminating the restrictive cat, and that will improve on gains also.

iknowmysh1t · 07-31-2007, 03:10 PM

buying the weapon r header isnt going to free anything up unless you use the same diameter catback or bigger.

audiophile · 07-31-2007, 04:55 PM

Quote:

Originally Posted by iknowmysh1t

buying the weapon r header isnt going to free anything up unless you use the same diameter catback or bigger.

Deleting the cat(s) don't help free up any hp???

projectprelude · 07-31-2007, 04:58 PM

^^^ i think he mean if you also dont get a full exhaust it wouldnt do much...

crxlvr · 08-01-2007, 08:09 AM

well when i do exhuasts on my cars, i dont just do a catback, header(s) and a free flow cat are also always ordered, i never half ass it, cuz there is no point in getting a free flow header only to crash into a highly restrictive cat

SOGO · 08-01-2007, 01:41 PM

Quote:

Originally Posted by crxlvr

i never half ass it, cuz there is no point in getting a free flow header only to crash into a highly restrictive cat

Actually, does anyone know just how "highly restrictive" the R18's cat is? I understand the stock cat (at least, this one) is pretty free-flowing as it is.

EXcoupe06123 · 08-01-2007, 02:04 PM

Quote:

Originally Posted by SOGO

Actually, does anyone know just how "highly restrictive" the R18's cat is? I understand the stock cat (at least, this one) is pretty free-flowing as it is.

Yeah I also want to know if is worth to improve the whole exahust system.

But I want an almost stock sound, can improving the exaust and having and quiet stock sound be possible?
I yes what are the parts that I would need

07-31-2007, 09:24 AM	#1 (permalink)
crxlvr Senior Member Join Date: Jul 2007 Location: www.lituners.net Age: 26 Posts: 322 Scott iTrader: 4 / 100%	R18 mods Ok im getting confused with all these parts that are being dyno'd, some are making power while others are, in some cases losing power. Obviously my r18 sedan isnt gonna win any races without forced induction, but i have an 8month old son and a wife who can barely drive an automatic. Anyway, im looking to add some power to this car, so does anyone know an i/h/e setup that would actually make power and sound decent?

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07-31-2007, 10:53 AM	#3 (permalink)
audiophile Senior Member Join Date: Nov 2006 Location: Minden, LA Age: 24 Posts: 1,700 Ben iTrader: 1 / 100%	NST pullies... best bang for your buck.

07-31-2007, 11:25 AM	#5 (permalink)
crxlvr Senior Member Join Date: Jul 2007 Location: www.lituners.net Age: 26 Posts: 322 Scott iTrader: 4 / 100%	well i do have a front upper strut bar, and wider wheels/tires with the si rear sway on order, so im happy with the handling. so freeing up HP is my next if not last goal. nst pullies i did read about and i will def get those. sounds like the greddy ti-c is the best exhuast too, but have seen no clear choice as to a good intake or header(not sure if anyone even makes an r18 header) any names guys?

07-31-2007, 02:51 PM	#7 (permalink)
mO 64 StAnG 06 Senior Member Join Date: Jan 2007 Location: Wylie, Texas Age: 20 Posts: 2,741 iTrader: 0 / 0%	Well, since their isn't any header for the car the stock is going to have to do. No way in changing out the exhaust manifold from the engine. But buying the Weapon R "header" is basically eliminating the restrictive cat, and that will improve on gains also.

07-31-2007, 03:10 PM	#8 (permalink)
iknowmysh1t Senior Member Join Date: Mar 2007 Posts: 973 iTrader: 0 / 0%	buying the weapon r header isnt going to free anything up unless you use the same diameter catback or bigger.

07-31-2007, 04:58 PM	#10 (permalink)
projectprelude Senior Member Join Date: Jan 2007 Location: wooster , ohio Posts: 2,479 Aaron iTrader: 3 / 100%	^^^ i think he mean if you also dont get a full exhaust it wouldnt do much...

08-01-2007, 08:09 AM	#11 (permalink)
crxlvr Senior Member Join Date: Jul 2007 Location: www.lituners.net Age: 26 Posts: 322 Scott iTrader: 4 / 100%	well when i do exhuasts on my cars, i dont just do a catback, header(s) and a free flow cat are also always ordered, i never half ass it, cuz there is no point in getting a free flow header only to crash into a highly restrictive cat