So basically im trying to improve the looks/performance of my car before I sell it in a few years. This car has lost a noticeable amt of power since i bought it in 2006. I want it to feel like the V-6 it used to be; currently prob at 9.3 secs from 0-60 . My warpseed ypipe is on its way and my cai was recently installed. How much would this combo shave off that time? 99 auto SE-L.

 

If its losing power maybe you should look more into maintenance to restore power rather than tryin to make more?

 

I was experiencing the same exact issue on my 1996 SE 5sp until I replaced my stock Y with a Warpspeed Y. Turns out the pre-cats in the stock Y were completely degraded and were plugging up the exhaust system.
The main cat was also completely plugged, we tried blowing air from an air compressor through the exhaust via the muffler with the Y pipe off and it was almost air-tight, as in air was going back at us through the muffler instead of going through the cat.
Make sure to inspect those things when you replace the Y.

Also, watch for bad 02 sensors! That can cause a very noticeable loss in power. So many things - vacuum leaks, bad compression, improper fuel pressure.

 

the most common noticeable power loss is due to a knock sensor problem. Hook it up to an OBD-2 code scanner (free at most parts stores, Oreilley's, etc.) and see if you need to change it.

 

Good stuff man! I got a P0325 code....knock sensor 1 circuit (bank 1). That explains the hesitation when i pull off.

 

I just got this code the other day

http://www.ebay.com/itm/330673419924...84.m1439.l2649

 

Just bought it. I heard its a pain to reach the knock sensor in our cars so hopefull the labor wont cost too much...

 

It is not that bad. It is easier if you have small hands though

 

I have to take my intake off to replace the valve cover gaskets anyways.

Easier for me

 

ughh, my gf and I dont have small hands lol

 

I do. Where you at in jersey?

 

Im in New Brunswick, 08901. Anywhere near you?

 

About 1:40 drive.

 

Well if you're gonna be hooking me up then I'll drive to you! PM me.

 

++1 you should do what Zach says all i had on my 97 was a Y-pipe and that was it with stock intake and i use to whip a$$ in jersey back yard 1/4 mile maintance is the key for 4th gen max

 

nice to see nj orgers hookin up. just recently figured out how to do the KS without pulling IM, with big hands. i removed intake up to the TB, which is easy. then i remove that little green rectangle thats kinda in the way. with the rectangle removed i can reach in there. with it on i cant.

 

Was your car "cured" after you changed it?

 

i did mine the hard way a long time ago when i was doing all kinds of gaskets. but on the car i just did it on, yeah, it fixed the code.

 

Before you fixed it, what symptoms did you have? I dont want to get my hopes up if I replace it and my car is still hesitating, etc.

 

Not really. Under WOT, or heavy acceleration, the ECU runs in open loop. It ignores the O2 sensors and runs a set map.