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Old 09-06-2003, 03:32 AM   #1
jumper
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Default Full exhuast system, intake and proECM

Hi guys.

got myself a 3" CAI + k&N panel filter, 2.5/2.25" MRTrally headers, hiflow cat, midpipe and sports muffler. also got a proECM hooked up for about a week and i can tell you that the results are pretty good!

got a few issues tho. the torqe down bottom 1-3 dont seem to pull as hard. when it gets to 4-5 it roars!! it actuall jolts me back where as before it was around the 3-4krpm mark. did the exhuast kill my torque down range?


i've also have had a strange occurance when reving idle. around the 2-2.5k rpm range the exhuast or something "vibrates" i dont mean shake or ratter it just a high pitch vibration. is that normal to expect when you get a full exhuast?

anthing thing is that i can HEAR the exhuast or is it intake? "whoosh" when i'm going around 3-5krpm now. seems more like a bit of air rushing past a tunnel. hmm..i'm guessin better air flow? but its pretty noisy


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Old 09-06-2003, 09:43 AM   #2
JC
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I don't have a high pitched vibration. You sure that's not your intake?

JC
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Old 09-06-2003, 10:09 AM   #3
jumper
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Quote:
Originally posted by JC
I don't have a high pitched vibration. You sure that's not your intake?

JC
yup damn sure it aint the intake. cuz i lined it with sound absorbing foam. also it fits snug in the hole in the fender.

i think the whole exhuast resonates around 2.5kRPM range..i've tried it and evey time its around 2.5...

hmm...i've also noticed that there is a faint whistling sound. like massive air is rushing threw the headers or something...even on light throttle it sounds like there is a hhsssssss..

Last edited by jumper; 09-06-2003 at 10:14 AM.
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Old 09-06-2003, 01:16 PM   #4
DDMan
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I too had that "hsssss" with my borlas...I dont know if it was an exhaust leak or the fact they are Stainless Steel and lots thinner than the stock manifold.
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Old 09-06-2003, 01:45 PM   #5
RChampion
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i know this is a little bit off topic, but I am planning on getting an MRT header back system, and I was wondering where you got yours....

rob
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Old 09-06-2003, 09:17 PM   #6
obyone
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Quote:
Originally posted by jumper


yup damn sure it aint the intake. cuz i lined it with sound absorbing foam. also it fits snug in the hole in the fender.

i think the whole exhuast resonates around 2.5kRPM range..i've tried it and evey time its around 2.5...

hmm...i've also noticed that there is a faint whistling sound. like massive air is rushing threw the headers or something...even on light throttle it sounds like there is a hhsssssss..
The hissing is definatly from your Intake. I used to get a nice turbo-like hiss from my AEM intake, whenever I stepped on it or let off the gas. It went away when I went to the Cobb and I don't have it now that I have the MRT header back system.
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Old 09-06-2003, 10:16 PM   #7
JewPac42
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Quote:
Originally posted by obyone


The hissing is definatly from your Intake. I used to get a nice turbo-like hiss from my AEM intake, whenever I stepped on it or let off the gas. It went away when I went to the Cobb and I don't have it now that I have the MRT header back system.
Really? It disappeared when you went to the COBB? That's interesting becuase I still get that sometimes.
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Old 09-06-2003, 10:49 PM   #8
JC
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Quote:
Originally posted by jumper
yup damn sure it aint the intake. cuz i lined it with sound absorbing foam. also it fits snug in the hole in the fender.

i think the whole exhuast resonates around 2.5kRPM range..i've tried it and evey time its around 2.5...

hmm...i've also noticed that there is a faint whistling sound. like massive air is rushing threw the headers or something...even on light throttle it sounds like there is a hhsssssss..
Try taking the intake off and seeing if it's still there. Next time I drive my car, I'll try to listen for this.

JC
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Old 09-07-2003, 12:16 AM   #9
jkyes
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Quote:
Originally posted by bigbobchamp
i know this is a little bit off topic, but I am planning on getting an MRT header back system, and I was wondering where you got yours....

rob
http://www.langstonsubaru.com/en_US/
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Old 09-07-2003, 12:21 AM   #10
jumper
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Quote:
Originally posted by bigbobchamp
i know this is a little bit off topic, but I am planning on getting an MRT header back system, and I was wondering where you got yours....

rob
i got mine at MRT. i live in Sydney its just a short drive up to the boys' workshop. i can tell you that the MRT headers are one of the best designs there is if ur looking for performance via unrestricted air flow. its even better then the borlas 4-1 system. too much bends and some times gives you CELS. thought it gives a monster boxer burble! the MRT headers dont give that much of a tone but i can tell you that it makes up for the performance
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Old 09-07-2003, 12:23 AM   #11
jumper
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Default

Quote:
Originally posted by obyone


The hissing is definatly from your Intake. I used to get a nice turbo-like hiss from my AEM intake, whenever I stepped on it or let off the gas. It went away when I went to the Cobb and I don't have it now that I have the MRT header back system.
no i'm sure of it. cuz i put the snorkel back on today! and it was the same...100% sure its the headers or the cat or something
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Old 09-07-2003, 01:02 PM   #12
DrBoy01
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I had that same sound when I had my Borla headers installed. My best guess is that it comes from the increased air flow and the "thinner" design of the Borla's piping when compared to the stock headers.
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Old 09-07-2003, 11:17 PM   #13
jumper
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yup must be then. after i reset the ECU i think it pulls better. been driving it like crazy today. hope it learns to improve performance.
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