Best bang for your buck aftermarket supra parts

j_moy_08 · 10-30-2005, 05:48 PM

So how much power do you think im gonna gain from an intake and exhaust?

mrnickleye · 10-30-2005, 07:11 PM

Quote:

Originally Posted by j_moy_08

So how much power do you think im gonna gain from an intake and exhaust?

About 10-15hp is the 'general' gain, assuming that the car is in good running condition, and the existing intake and exhaust are in good condition.

If the intake or exhaust are in poor, or restrictive condition, you are losing hps, so new systems will feel like a bigger gain.

ie: when I got my '89 N/A, the exhaust system was restricted starting from the cat back. Someone had done a crappy job on the system.

The pipes went from 2 1/2", ran about 18", then down to 2 1/4", ran back to about 12" from muffler, then down to 2" on into the muffler, and coming out the muffler was 1 7/8".

When I put a new 2 1/2" Magnaflow cat, resonator, pipes, and muffler on....WHAT A DIFFERENCE !!!!!

Headers (OBX) are next. I expect to gain at least 10hp from them.

PS. top speed before new system, 125mph....after, 140mph.
(disclaimer...not recommended for everyone...wear a helmet !!)

kewlcoconut · 10-31-2005, 07:14 AM

yea make sure that the car runs good. im putting in a new magnaflow cat soon and some headers (OBX as well). and that sounds like there was a really shitty exhaust job done on your car man. so much restriction. but its good to hear that you changed it all and gave it some power!

just a question mrnickleye, do you know any good stores online that sell the magnaflow cat converter? im trying to find some places that sell them. thanks.

Burn N' Up · 11-01-2005, 10:04 PM

Nickle and Bullz eye are right. Trying to squeeze power without getting back to stock condition is stupid. You'll bolt on a bunch of shit and melt your block because of a stupid mistake like a poorly functioning water pump or belts that are crap. Power can be as simple as changing your spark plugs (of course to iridiums) and gapping them properly. Seafoaming the engine. Changing ALL the fluids. hoopties don't make power. Cars in good condition with proper modding do.

And just for the record, Nitrous is usually just a show off toy... unless your crazy and decide to push the other button... the one that doesn't say purge. Hope you popped for the MHG and have your compression proper.

rnoswal · 11-02-2005, 08:13 PM

Cams, pistons and headers. For a naturally asperated car you need to get a lot of air in, squeeze it a lot and get it out fast. Without doing that stuff, you can advance the timing till just before it starts pinging. You can either advance or retard the cam timing for either low or high end power. Make sure that valve clearances are right. If it misses of course check the electrical parts. Not much else. You might find a higher numerically gear rear end for quicker starts off the line, but top speed suffers.

Turbo charge it. It seems to be the best. Mine is a N/A and if I shift between 4 and 6 thousand rpms, those are my quickest times. You can feel the cams coming in around there.

Russ

10-31-2005, 07:14 AM	#3
kewlcoconut 3" Exhaust Join Date: Sep 2005 Location: Vancouver, BC Canada Posts: 157	yea make sure that the car runs good. im putting in a new magnaflow cat soon and some headers (OBX as well). and that sounds like there was a really shitty exhaust job done on your car man. so much restriction. but its good to hear that you changed it all and gave it some power! just a question mrnickleye, do you know any good stores online that sell the magnaflow cat converter? im trying to find some places that sell them. thanks. Last edited by kewlcoconut; 10-31-2005 at 07:24 AM.

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10-30-2005, 05:48 PM	#1
j_moy_08 Stock Join Date: Oct 2005 Posts: 9	So how much power do you think im gonna gain from an intake and exhaust?

11-01-2005, 10:04 PM	#4
Burn N' Up 3" Exhaust Join Date: Sep 2005 Posts: 238	Nickle and Bullz eye are right. Trying to squeeze power without getting back to stock condition is stupid. You'll bolt on a bunch of shit and melt your block because of a stupid mistake like a poorly functioning water pump or belts that are crap. Power can be as simple as changing your spark plugs (of course to iridiums) and gapping them properly. Seafoaming the engine. Changing ALL the fluids. hoopties don't make power. Cars in good condition with proper modding do. And just for the record, Nitrous is usually just a show off toy... unless your crazy and decide to push the other button... the one that doesn't say purge. Hope you popped for the MHG and have your compression proper.

11-02-2005, 08:13 PM	#5
rnoswal Lexus & 550's Join Date: Apr 2005 Location: Bossier City LA Posts: 556	Cams, pistons and headers. For a naturally asperated car you need to get a lot of air in, squeeze it a lot and get it out fast. Without doing that stuff, you can advance the timing till just before it starts pinging. You can either advance or retard the cam timing for either low or high end power. Make sure that valve clearances are right. If it misses of course check the electrical parts. Not much else. You might find a higher numerically gear rear end for quicker starts off the line, but top speed suffers. Turbo charge it. It seems to be the best. Mine is a N/A and if I shift between 4 and 6 thousand rpms, those are my quickest times. You can feel the cams coming in around there. Russ