Installed my JDM 4-1 header along with the Carsound 94006 Cat modded by SMSP. Install was a breeze. Used all hand tools and had no problems with any bolts! JDM 4-1 and cat fit like a glove to my Apex-i N1 cat-back. Took 1 hour to install.

First Impressions is that the car is ALOT LOUDER! After listening for rattles and any problems, time to punch it! I must say that VTEC hits much harder and pulls harder!! I can deff feel the HP and Trq gain from 4k to 8.5k! I feel as if money very well spent on these bolt-ons! I got the Cat from Dave at SMSP, he supplied everything I needed and I recieved the cat in 1 day! I did not use the exhaust adapter b/c i felt he bottleneck was so minor why cut my N1 piping. I must agree that a Header and a Cat on a ITR do help! Can't wait for the cams!!

 

Good review.

 

Thanks!

 

Awesome, I can't wait to go w/ this combo on my GSR. Except I think I'll be using the new Skunk 2 exhuast.

 

I had the opportunity to get a ride in smitdogs car with the jdm 4-1 and cat. I rode in it before the header and cat, and it pulls so much harder now. a lot faster and louder, very nice setup and awesome car.

 

Damn. I want..
How much did the header and cat cost you?





[Modified by jond, 9:14 PM 8/20/2002]

 

Any CEL with that cat until now??

Good review!

 

 

NO CEL. I reset the ECU after install and no problems!! Only good things to say!

 

Thanks Jeff! Like I said only good things to say!!

 

damn you got it in one day??? are you located close to him?? i hope mine comes soon.....

 

Thanx for the review

 

Chris, thats a **** poor reveiew. Woopty doo, he didnt even give any pictures? WACK!

 

Smittay!
it was a pretty quick install not may problems except for getting the o2 sensor out of the stock cat

 

Awesome!

I just hope your car doesn't turn to **** like mine and many others have. I loved my setup at first, but now mines a rattling mess.

 

exactly how i felt after i installed the 4-1. good power gains through out the WHOLE powerband, not just in VTEC. the vtec punch is VERY nice. after i installed the type one exhaust. VTEC punch is x 5


BTW- Header install in an HOUR?!? You must be a beast. lol

 

nice

Mine should be here this week. I can't wait

 

so you're gonna help do mine, right? hehe.. glad to hear you like it man.. did you ever get around to dremeling out the welds, or did you leave it alone?

 

It went out today.

 

Good review.. so the cat is worth it huh? I went with the Comptech header instead of the JDM ITR one...will i se the same power gains? The comptech header actually made more power in the dyno's i saw..any thoughts please...cause i can get the JDM one...thanks

 

Man you make me want to get out my tools and instal my same set up accept I got the adapter for the Bpipe just need my buddy to get some time to weld it on for me.

So how much louder is the car now? on a scale of 1 to 10

 

I would say the car is alot louder than before, ummmm a 7 or 8 on a scale of 1- 10. Hard to explain I will try my best to get a sound clip and pics up ASAP!

 

Hmmm, maybe it's because I have the AEM LAI (Loud *** Intake), but I didn't notice ANY increase in sound from stock header/cat to the JDM 4-1/Carsound. I also still have my stock ITR cat-back.

I also agree, one of the best bangs for your buck. (specially when you get your header used for less than $200, hehe)

 

Yes if u are running Stock ITR exhaust I can understand there being no noise difference, but have a N1 and then put the header and cat combo on and it goes from Loud to Race Loud! I am sure someone can vouch for me!


[Modified by Smitdog, 6:17 PM 8/21/2002]

 

oh yeah.. it's loud as hell.. i was following him in my ITR, with a stock exhaust.. and that thing was screaming.. i could easily hear his exhaust over my own and my stereo..

that N1 has a really open flow to it, with no cares about volume.. with the header and highflow cat, it just gets louder all around..

the restrictions in the stock catback i'm sure make it tremendously quieter.. but I would also assume that it doesn't have as good of gains..