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5th Gen - Holley THUNDERMUFF!!!




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Street Sniper
10-06-2005, 10:49 PM
Sweet, I get to go first. 5th gens pwn. Ok, ahem...

I got my Holley Thundermuff cat-back off of e-bay for about $150 shipped. It's 2.5", mandrel bent, galvanized pipe. Only the gigantic tip is polished, the opening of which is 5" but the canister is much larger.

I noticed a great gain. My little g-tech put it at around +8-10 Hp. Not too shabby for $150 brand new.

Install was a breeze. It took no more than half an hour and all of the hangers worked perfectly with the stockers except the muffler hangers. Get yourself some longer ones becasue the tip is so large that it will snuggle right up to your bumper with the stock hangers, but the good news is that the tip is large enough to dissapate heat so that it won't melt your bumper. I had mine like that for months with no burning or melting. I kinda liked the way it looked snug up against it, but it will stick out a little too far for most people's liking.

And lastly, the sound. Got ear muffs? For the first few weeks it was fine. Nice deep, sporty tone. But after it gets broken in it gets progressively louder. When I switched to a header and high flow cat, it got ridiculous and I had to switch tips, but $150 for the original + 40 bucks for the new muffler, I am still under 200 bucks with a 2.5" mandrel bent Holley/Magnaflow hybrid.

Pros-
-Price
-Performance

Cons-
-Huge tip
-Really loud
-Tip protrudes a little far

Recommendation: If you are low on funds like me and/or like a loud exhaust then this is the best value I have seen, and I have looked high and low. You wont find a used cat-back for this price.


StifflersMom
10-08-2005, 12:13 AM
ORIGINAL: Street Sniper

Sweet, I get to go first. 5th gens pwn. Ok, ahem...

I got my Holley Thundermuff cat-back off of e-bay for about $150 shipped. It's 2.5", mandrel bent, galvanized pipe. Only the gigantic tip is polished, the opening of which is 5" but the canister is much larger.

I noticed a great gain. My little g-tech put it at around +8-10 Hp. Not too shabby for $150 brand new.

Install was a breeze. It took no more than half an hour and all of the hangers worked perfectly with the stockers except the muffler hangers. Get yourself some longer ones becasue the tip is so large that it will snuggle right up to your bumper with the stock hangers, but the good news is that the tip is large enough to dissapate heat so that it won't melt your bumper. I had mine like that for months with no burning or melting. I kinda liked the way it looked snug up against it, but it will stick out a little too far for most people's liking.

And lastly, the sound. Got ear muffs? For the first few weeks it was fine. Nice deep, sporty tone. But after it gets broken in it gets progressively louder. When I switched to a header and high flow cat, it got ridiculous and I had to switch tips, but $150 for the original + 40 bucks for the new muffler, I am still under 200 bucks with a 2.5" mandrel bent Holley/Magnaflow hybrid.

Pros-
-Price
-Performance

Cons-
-Huge tip
-Really loud
-Tip protrudes a little far

Recommendation: If you are low on funds like me and/or like a loud exhaust then this is the best value I have seen, and I have looked high and low. You wont find a used cat-back for this price.


I second all he said. And I'm getting a quiter muffler instead of the grapefruit shooter too...and still coming out under 200 for a quality made catback...

LEVIII
10-08-2005, 11:23 AM
The reason the tip sticks out so far is cause usally high performance cars run very rich so lots of black gunk comes out the exhaust and the longer tip helps keep your car clean. It is so hard to find one for the lancer that doesnt stick out much.


riceburner700
03-13-2006, 12:02 AM
i totaly agree with carbon built up on the bumper from a shorter tip.

dakzak_99
04-15-2006, 02:41 PM
best bang for the buck just put thundermuff on my civic nice deep tone one of the best catbacks ive heard

dragoth
03-23-2007, 12:11 PM
So what the heck does it look like on the car? I'm looking for a new exhaust system (as mine is currently very broken)... I can't find images of it anywhere!

$150 for a bolt-on is fantastic!

My04Civic
03-23-2007, 12:16 PM
thundermuff lmao, anyone else find that name hilarious, but nice dude, lets see/hear that baby

dragoth
03-23-2007, 01:44 PM
Agreed, the name is horrible, but if it looks / sounds OK then I'm in.

FlipHKD720
03-23-2007, 02:31 PM
wow, 5" outlet? that things huge

one of you guys with it should post some sound clips

Eun
03-26-2007, 09:06 PM
you're kidding. 5". And what's with the name? is it for real? haha nice.:D

WhiteRabbit1021
03-27-2007, 02:07 AM
I would like to see pictures of your thundermuff. lolwtfomgbbq thumdermuff!!

FlipHKD720
03-28-2007, 02:40 PM
ORIGINAL: WhiteRabbit1021

lolwtfomgbbq!!


[sm=imsmilin.gif]

Fiasco
04-27-2007, 09:37 AM
bump on this thread, i just bought this full catback with header for 200 bucks. After seeing this 5" tip....woah. So my question is, what did you guys replace the 5" with??
Can i use any muffler, just weld it? Id like to throw an evo2 on this thing or maybe the twin loop deal

Thanks

Fiasco
04-27-2007, 12:18 PM
bump anyone know if you can just cut off the muffler thats on the end and weld on a different one? Has anyone done it?

thx!

ksrecon
06-16-2007, 12:08 PM
I wouldn't see why not?

edit *just noticed this threads kinda old lol. It was on the top!!*

JakeyMan07
08-22-2008, 03:25 PM
yes i bought a holley thundermuff for my 2000 civic ex and it was hard taking old exhaust off but took like 30 mins to put the new one on i paid 100 bucks for it on ebay and i tell you i could feel a little horsepower difference i know the 5 inch tip is big but i think its a great buy for the price i had compliments on it all the time and i think it accutally looks realy good but even muscle car guys told me it sounded pretty good for a honda lol. and also about the longer hangers you dont need longer hangers just towards the muffler heat the pipe up with a torch and bend it down a little bit so its not on the bumper thats what i did and it looks great and the tip does not get very hot had it on for about a year and still looks brand new. holley is awesome