I know this is kind of a specific question, but if anyone has any idea it would be helpful. I live in NY and i want to get a header, test pipe and cat back. I was wondering first if the car will still pass the emisions test. Cars in NY have to be hooked to a comp for inspection, i thought that once they were 10 years old they didn't have to be any more. Also, this is pretty much for anyone, what type of tuining can i expect to do to get the most out of adding these mods. I'm not expcecting to feel any difference i just want the engine to be running as well as it can. The motor is all stock except for an intake, any timing issues? should i have the ecu flashed for the mods with hondata to get the most out of this? I've heard that you can tweek a stock motor for a few more hp just buy changing factory settings. I know this is what honda tuned for, but that is for fuel econ. and i would be tuning for max HP. thanks for the help

 

On my gsr motor, the only thing header, exhaust and testpipe did was make the car louder and unable to pass inspection. Get a high flow cat if you insist on ditching the stock cat so you can still pass emissions. No ECU tuning must be made to account for the power increase that you'll achieve with those mods.

To give you an idea of the power you might be able to expect. My gsr made 164 whp 120 wtq with SRI, DC 4-2-1, GReddy Evo catback, high flow cat, S2 intake mani, and a V-AFC. It baselined in the high 140's. Now, it's making 290.3 whp and 208 tq. Turbo>NA

 

thanks for the info...what about the timing with the cams? could thoes be adjusted for more power?

 

possibly but i wouldnt get cam gears if i didnt upgrade cams either. all the mild n/a mods arent worth it IMO. if you want a reliable daily than i understand and i/h/e would be just fine. but if you really want some power than turbo is the way to go.

 

I'd have to agree with you. I will be doing major interal work over the winter, i just have a stupid rattle comming from the exhaust and i want it fixed now. Cams are on the list for the winter. I don't want a turbo yet, i autocross and i don't think that it would be helpful, i actually think it may slow me down causing more understeer. I'm just going one step at a time.

 

anyone

 

I don't know how some people on here talk about LS VTEC motor builds, and then leave all the easy questions. I've tried the search thing before just to see what was out there. This time i tried to search for something and just as i thought the seach feature is pretty weak, i know i'll never tell anyone to search anymore. So if anyone out there know if i can adjust my cam gears after headers to make the motor run smoother and maybe a littel more power let me know. I've seen posts on here that say motors are stock tuned for fuel efficency, and you can get a few more hp with a good tune. Advance the timeing i think i heard? I don't know, if anyone does tho that would be great

 

"I live in NY and i want to get a header, test pipe and cat back."

I dont see how you plan on doing a test pipe with a cat. Correct me if im mistaken, but isnt a test pipe a pipe that bolts up into the place where the cat is supposed to be?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by funtak &raquo;</TD></TR><TR><TD CLASS="quote">
I dont see how you plan on doing a test pipe with a cat. Correct me if im mistaken, but isnt a test pipe a pipe that bolts up into the place where the cat is supposed to be?</TD></TR></TABLE>

I would put the header on on then the test pipe then a cat back exhaust. what don't you get. I'm not the first one to do this. you are right with your test pipe location tho

 

You can't adjust your cam gears unless you purchase adjustable cam gears like these or others http://www.skunk2.com/raceShop...14210 The cam gears that come on the car from the factory are not adjustable. You probably wouldn't get much power if any at all by moving around the cam gears after a simple header install. On higher power cars, it's a different story however.

I recommend the Vibrant 3" catback if you're looking for a relatively inexpensive exhaust that you won't have to upgrade in the future. I bought mine from this guy &gt;&gt; http://stores.ebay.com/Massive-Speed-System

 

a 3'' pipe??? There have been so many posts on here about not going crazy with the pipe size. I'm not planning on ever having much over 250 whp and i think would be way to much from what i have read on HT. So if i can't adjust on the cam gears, how is the timing adjusted on a stock motor? I've heard advance it for a slight hp gain?

 

there are two different types of timing, ignition and cam. you can adjust base ignition timing by rotating the distributor. but i would just leave it at stock and use an ems to adjust the timing maps in the ecu if it makes power. cam timing you'll need adjustable cam gears to advance or retard the cams. again, without big cams you'll see no benefit.

for your test pipe question, the stock cat is not a big restriction until you start moving lots of air, unless the stock cat is severly clogged. with boost, the bigger the exhaust the more power you can make and less lag you'll have. but base exhaust size on power level.