Please need suggestion on these muffler?

[Promo2000]

Hello! Im about to buy tomorrow, these:
HKS Universal Stainless Hi-Power Muffler
http://www.hksusa.com/products/?id=847

Is these a good buy??? Would I get some Hp increase?

Thanks..

[ebpda9]

no hp increase unless you do the piping too

[Promo2000]

Hello !
I bought the muffler, is the best muffler that I ever had before. It looks awesome! During installation I remove the catalytic too. When testing the muffler, it makes a deep deep sound during low rpm until almost 5k it becomes some weeeeeeee… but not so loud. I felt some increase in the car power, I’m not sure if it’s a psychological gain but I felt it! For example, when accelerating fast and when shifting from 1st to 2nd, my tires make a screech sound like if it increased the car’s power, but I will see if it lowered my time in the 1/8 of mile until Saturday night and I’ll post results. Last Saturday 11.18s..

Thanks!

[Hellified SH]

Ahhh who runs an 1/8 go for the manly 1/4 mile run 11.18 is sorry for an 1/8 mile run.. You really should have went with a catback and no there will not be any recordable HP gains on a catback either unless you and a High Performance header also like DC Sports.. You might feel power if you still have the cat off... Just my .02

[pimpinprelude]

wait, u took the c/c off? you can go to jail for that..yea i know it sounds like a lot for such a lil thing but its tru.....just another stuped law........

[pimpinprelude]

yea i do think it is just a psychological thing.. cuz if it sounds good the more u give it gas, and if u like that sound then your are going to give it more gas than normal,and thats where u get your wheel spin, i doubt that u got that much of a gain..but hey if u like thats good! i am not hating, or being a smart _ss thats just whats going on..... enjoy your new toy!

[Promo2000]

Whats a prelude 2.3 1/8 mile time?
I took the cat off because I live in Guatemala and here there isnt a law regarding the cat... =)

[pimpinprelude]

oooooooooo ok I see, wow i wish i could do that here in the states!

[Shot 2 Hel]

F*ck getting just a tip go with the whole exhaust

[Promo2000]

Just for the record,
IM HAPPY!!!
Last saturday without muffler: 11.18
These saturday with my new muffler, 10.59!!!!
Times are on a 1/8 of mile.

[cantdrive55]

Wow, impressive improvements in times.

[pimpinprelude]

ok nevermind......maby thay do help....

[Promo2000]

I cant tell exactly what helped me, but I'm preatty sure, that removing the cat was very usefull. I notice some power gain in higher rpms, from 4 - 6k.

[Shot 2 Hel]

mighta been how you were driving

[robdog]

CAT BACK!!!!

don't go cheap, do a cat back...once its broken in, it screams and u can really feel high rpm gains!!