The easiest way and cheapest way to make your TL faster and better on gas is to hollow out the cat and get rid of all your pre-mufflers and resonators, but keep the factory mufflers on due to loud noise. But some states require cats so its up to you. I got a 1999 tl. Its not a type-s and its only a 4-speed automatic, no bullshit I've raced stock 2nd gen cl's type-s with 5-speed automatic and barely walked them with only those mods and a K&N air filter. I cant imagine what a header would do with all that. Dont believe me? Start with only gutting out your cat and you'll notice the biggest difference. My car went from struggling to chirp the tires at a dead stop, now it spins almost all the way through first gear and chirps second. Note, thats coming from the slowest produced 2nd gen tl non type-s. And it adds at least 3-4 miles better a gallon on the highway. And NO it does not screw up your car, it just allows it to breath better.

 

Sounds like a plan. Now I just gotta figure out how to do so I have a full cat-back system, so I think it'll be a lot louder with the Tanabe SMH system, but hopefully not too bad. Time to go to work. If you have any suggestions for me fill me in. Thanks.

 

I had thought of removing the mid muffler on my Apexi 2,but everyone told me that it would be too loud...............did you basically replace your cat with a straight pipe........I have a RT high flow cat,could that be "hallowed" out also??.Sounds like a good mod

 

can you help me do those things u stated please?

 

^^^ Your in Cali, like me.We kinda have to be careful with what we can do.........if he put in a straight pipe,that a big No-No in our state.Pretty much my high flow cat I have now will not pass inspection.

 

I believe that your high-flow RT cat can be hollowed out just like any other cat. I would also like how to do this, but I'm pretty sure you can do it with a regular and Hi-flow cats.

 

^^Great..............now all we need is more info from the thread starter

 

And by doing so you will have a CEl and a car that doesnt run properly with out getting a O2 Emulator. Also the cat on the TL doesnt really restrict much exhaust flow unless its clogged. There for im raising the BS flag

And guys to hollow out a cat, its as simple as breaking out the ceramic inside. Its not rocket science. Take a pipe and pound it thru. But you WILL Not pass emissions testing

 

I don't think that is a big deal in VA. I know that they really don't pay that close attention around here that they might in other states. If this mod is worth it I would do it, but according to fsttyms1 it's BS. Thanks for the input fsttyms1.

 

is it the same thing as replacing ur cat with a straight pipe? if this wont fuk up my car im looking foward to doing this.

 

HAHA.....its funny...I was just reading an article today in Super street or Import tuner (forgot which one), which dealt with this subject. They tested four different configurations, stock cat, test pipe, and two different high flow cats...one ceramic core, and one mettalic core. The biggest gain was with the test pipe (obviously) but it only gained 1 horsepower over the 4 horsepower gain with a high flow cat. So the trade off of running no-cat/hollow cat for a measly gain in power, versus not passing inspection and being harrassed by "the man", is definitely not worth it.

I'm going to rule this B.S...I don't think your TL-P could beat the CL-S unless that CL is BEAT UP!!

 

Ok, so u people think its bs? I'll keep my car looking like a sleeper by making it look stock while u guys spend over $400 on aftermarket exhaust systems that only make a 5 hp difference. The truth is that you guys are assuming things but you dont know until you've done it. And yes, no bs, my car has walked away from a 2nd gen cl type s. Its not like they're THAT fast anyways, they run high 14's in the quarter. This i know cause my friend has an 02' cl type-s and thats who i raced a bunch of times and he couldnt believe that i was walking away from him, but when i told him what i have done to my car he wanted the same thing done to his, so we did the following day, and it made a bigger difference on his car. And yes, his car now walks away from mine. But yeah, u just hollow out the stock cat, put it back on and have a shop cut off the pre-muffler and resonator and weld on a straight pipe on what he cut off.

 

And always after every mod reset your battery. And your check engine light? Mine has been coming on way before i screwed around with the car, but it comes on with the TCS light at the same time which has nothing to do with your exhaust. I think it has to do with my rotors being worn cause when i break my car kinda shakes in front due to bad rotors and thats when my CEL and TCS come on at the same time.

 

But im not 100% sure why my CEL and TCS come on at the same time maybe someone knows?

 

There you go........

 

Good looking out Kris,I knew something about this didn't sound right

 

Obviously you guys havent passed the third grade becuase I dont think you can read. I stated that the CEL had already been on with the TCS which has nothing to do with the exhaust. Besides, I've had this mod on my car for over a year now and my car runs as strong as can be with no problems. I just hope that someone here listens to me and does this then tells everyone how big of a difference it really does make. I just think that some of you guys are just afraid of what you REALLY dont know and take advice from other people that just assume what might happen. Think about it, can you breath better from a coffee straw or a normal straw? Its the same concept.

 

i dont know why you guys are calling this bs when its basicly been done with everycar out there...

 

so your saying a straight pipe will give you 5 horsepower? that is alot for barely 50-60 bucks. and really when inspection comes you can just put the oem cat bak on...and as for cops...its not like you get pulled over every week..and even if they dont even check under your car unless your car is wayy to loud....so stop making excuses for ccalling this bs....dont hate on cheap upgrades.

 

It might "fuk" up your car,if you dont mind your cel light on then do it .........






But of course be sure to provide a dyno,and like you said if it works lets say at least 10hp increase,it for sure will then be a nice cheap mod.Hell i'll even apologize and then do it to my car.I sure LOVE mods cheaper the better lol

 

im definitly doing the test pipe....the problem is i have to find a shop that does it and im in IL, and im pretty sure its illegal to do that here...so i have to call around and look for a crooked mufller shop that owuld do it for me.

 

Sounds good ............you better PM the thread starter first though,I still don't really get what he means by "hallowing out" ..........bascially how would they do this.

 

alright....if we have to act like 8 year olds......2ndgentl, do you actually think your the first person that tried this?! Your a newbie.......nuff said.

O.K. enough of the childish nonsense. I'll take back the B.S. part...I KNOW it will flow better. The exchange for power will be not passing emissions. Wouldn't be worth it.....my

And I'm not bullshitting anybody or assuming anything......pick up the latest issue of the magazine (super street or import tuner...i'll check tommorrow).....you'll read the article and understand what I'm trying to explain.


Sorry guys....you all know I've NEVER given anyone a hard time on this forum.....no offense to anyone.

 

There was one for sale in the black market...

 

Before my tl i had a 2nd gen integra ls with almost every bolt on, my guess is that it ran a flat 15 in the quarter, maybe if lucky on the best day I might of broke in the high 14's. Thats good for an all motor ls. It was a quick little car. But then when I sold it and got my TL and noticed stock it was slower than my last little four banger integra it made me pissed, and trying to get used to an automatic car coming from a manual is tough, knowing that automatic slows your car down more than it being manual. But now i got that happy feeling again knowing that my TL would now smoke my integra.

 

this will not do anything. c'mon guys think. a test pipe gives you 5HP tops on your topend. a 99 tl-p with only a test pipe and K&N filter CANNOT walk a cl-s 5AT unless that cl-s is abused and not maintained properly. I have a 99 TL and when I started modding and header just headers and a K&N filter my friends 03 tl-s beat me by a solid CL from a stop to 60. then I added an AEM CAI, UR crank pulley, thermoblok spacers and a myriad of other smaller engine mods and I run royal purple oil and clean the shit out of my engine(EGR vale, IM, TB, fuel system) and I can beat a tl-s by 1-1.5 CL's from a dig or a roll. 1-1.5 is not really much and my car has all the bolt-on's, accept a hi-flo cat(really just a bigger cat, it doesn't flow more if it's not FI) so in saying that your 99 w/your mods beats a stock cl-s is kind of far fetched.

 

 

Look Pistacio, im not a newbie to this kind off stuff. I've been around the whole import scene LONG enough. I know whats right and whats wrong. I dont give out info if mentally it doesnt work. I just never EVER see anyone talking about gutting out their cats. I've done it to ALL my cars and noticed improvements on all of them. Its such an easy task for HP. OK, maybe its not worth it if you live somewhere where you have to do emission tests yearly. I live in Florida where they dont do emission tests. But I understand how you might see a thread in a magazine about the bad things of messing with your exhaust and I respect that, but from my knowledge just doing that to my car made a HUGE difference. Some people think mentally their car is faster by something they did, but in reality it didnt do crap. But I can tell you from struggling to chirp my tires from a dead stop to now it spins almost all the way through 1st gear and chirps second I think just that difference is huge. And no my tires are not bald.

 

For you SBUSWELL, all your car is missing is what I did to my exhaust. Your car would open up more than you think. You already have everything else you need. Open up that exhaust and let your car fully breath.

 

maybe your cat is clogged up thats why ur running so slow.....and i dont see why you speendd all that money.....on all those partss....and you think its a dumb idea to spend 50 dollars for 5 horsepower.....doesnt make much sense.

and pestacio u keep sayin that a test pipe is not worth not passing emmisions...and i keep explaining that you can put back on the old cat.damn homie use ur brain.

 

hey just explain exactly what they did and how much it cost ,I am dying to know now...If you walked the CL we all deserve to know how you did this.........before this thread gets off topic like all the others

 

I dont get why you're taking this so personal 2ndgentl. You've informed everyone about the mod, told them what it has supposedely done for you, and you should leave it at that. If people dont want to do it, dont understand it, or are afraid to because of legalities, leave it alone. You stated your gains, and simple airflow physics show you would have a gain; but the fact that our cars are highly sensitive computer controlled machines does leave open questions of problem codes and CEL's. Calling people stupid and comments like being in third grade is immature. To each is own, and their cars are their cars. Discussion closed.

 

Ok,Ok im done arguing, but here's everything to the pin point on what is done to my car if anyone wants to listen and try it out. #1: K&N air filter #2:I took the silencer/resonator off the intake tube and capped it off.#3: I took ALL the coolant hoses out of the air box and that little radiator and bypassed them so that no extra hot air flows through the air box. #4: I took that HUGE air box out from the side of the drivers wheel fender. #5:I gutted the air box out completely where it can breath the most air. #6: hollowed out cat. #7: took resonator and pre-muffler off and welded a pipe (test pipe) in place of it. COST: K$N $50 / TEST PIPE $60 / Everything else $0. Results with only $110 spent..............amazing. Im done from here now. I'll let everyone else talk about this now.

 

There's only a few reason you could have ever beat the TypeS

1) The CL has some major performance problem (i.e. broken actuator)
2) The TypeS was sitting on a flatbed tow truck at a stop light when you raced it
3) It was a CLP with a TypeS badge

Do you honestly think you are making 35 HP with just the mods you mentioned?

 

This is the point I was trying to make (except for 2) and 3) )that's all.....

I'm not knocking anyone for doing this....that's why I stated it was my own opinion. To each his own.


I'll scan and post the article later.....Oct. '06 Import Tuner page 122.

 

you guys keep saying everything that he says is bs...like the straight pipe and walking a cl-s...thats why he was mad.....and dont see how a straight pipe is bs....and if he walked a cl-s then he walked a cl-s

 

You got PMS today?

 

no........do you? why would u say some immature shit like that?

 

wow dumbass post of the year. never knew a tlp can smoke any type s, and a cls for that fact...burn this thread

 

btw, he should of done a dyno to prove his case, he just "walked" in here and stated this bullshit lol