Got this email from Dallas tonight:


Jesse:
Just to update you on the Y pipes, we made our first Y pipe for the 2002 last week, we are having several flanges custom made and will be sending out later this week 2 demo pipes. We are now having more flanges made using a laser cutter and will have them here within 2 weeks.

We also made a mandrel bent B pipe for the 2002 and will have some more of those available late this week. I'll get a set of the sfc's (sub frame connectors) ready to ship tomorrow.

regards
Dallas


I asked about the radial arms also, but he didn't mention them.

Jesse

 

Hell ya! So what do you think, two weeks and they should be availabe then? I can't wait! Good going WSP!!

 

Does "Warpspeed" have a website?

 

Warp Speed Performance

 

How about 00-01 TIG-welded Y-pipes???

 

I spoke with Dallas, and he said they will start shipping them in about two weeks. (I really, really hope so!!)

 

I had a pretty lengthy conversation with Dallas last night (since I'm one of the testers - I had a ton of questions ).

Looks like I'll have my hands on one by next Wednesday/Thursday and installed over the weekend. The testers will be getting only the aluminum pipes and the stainless will shortly follow, and the bends will be different on the actual production pipes - he wants a shorter bend 3" vs 1.5". He needs me to get a few hundred miles on the car before running an 'after' dyno, and I'll post those numbers ASAP.

If anyone has any specific questions (rather than repeating the entire conversation), fire away.

BTW - he expects to have some '00-'01 pipes shortly there after. He also mentioned a B-Pipe that will extend all the way back to the muffler, by-passing the 'rear-section' flange.

I am one happy camper right now!!! I'll be sure to let you guys know about the O2 sensors and the check engine light...

 

As I quote Dallas on the 02 Sensor question:

The precats are retained on the 2002. Basically you are enlargening the existing Y pipe from 1-5/8" tubing to 2", the stock collector is 2" and it is enlargened to 2-1/2". Should have no affect on the ECU.


This is probably why he said not to expect the same gains in the '02 as the 4th gens got...

 

Muchos gracias, senor.

 

Damn, in that case I am just going to go ahead and convert my headers to 2000 fed spec ones and then also relocate my o2 sensors


If the precats are staying on I would not expect more then a few HP gain tops.. Removing the cat's also takes a good 10 pounds of dead weight off the car.

 

That is a little dissappointing I must admit. I guess I will wait on Stillen to see what they are putting out. I was fully expecting the pre cats to go.

 

It makes you wonder why they are doing it that way... Will it be louder at least?

 

It will be a lot louder probably. The thing that makes a lot of the noise is the shorter less flexable flex section.



Stillen made a pipe for the altima which is very simaler to what WSP seems to be introducing. Stillens piece is called a "race pipe"(original huh). It hooks up right below the precats and actually replaces the main cat. Stillen claims a 8 HP increase from this piece.

 

Ethan you'd better get a frickin huge resonator.

 

Hey Emax - keep the front pre-cat. Just replace the rear manifold and lose the rear precat. You'll lose low end torque if you remove the front precat. Also you won't have to mess with relocating the O2 sensors behind the main cat. Trust me - I've tried this on two Max's and you're better off keeping the front pre-cat performance AND convenience wise.

 

Well that definatly would make the project a bit easier to do . I have thought about this a bit and I am not sure if the front pre-cat is the same on my 2002 as it is on the 2000-2001 Looks like I am going to have to get a 2 piece stillen pipe and find out first hand! I would still have to relocate the rear precat o2 sensor. I could just move it over behind the front pre-cat.

I will order a stillen Y-pipe tomarrow or at teh latest Thursday, this project is now going under way.

Matt, haha, my greddy will have to do! Nothing could possibly be louder or sound worse then my NZ PPC headers did.

 

The Stillen 2 piece Y already has a bung for the bottom rear O2 sensor - so you're all set here. As long as the front pre-cat dimensions and flanges are the same on 2K2's as 2K1's then you're in business. Removing the rear manifold looks like it's a real pain though!

 

so hopefully ti will be cheaper cus it will be smaller and i can keeo my test pipe installed and yeild the extra HP from that. the WEIRD thing about my test pipe is tjat my car does not have a smell AT ALL. the car runs so clean you almost don't need it. my other max smelled without a cat. and SFC's

 

Did the test pipe trigger a service engine light? Isn't there an O2 sensor behind the main cat?

 

On 2002's there is a sensor behind both precats(and in front), kinda like the Cali spec 00-01 has a sensor behind the front precat. I will have to weld a bung behind the front precat and move the rear precat sensor over to it. It will be easy to do

 

I should have been clearer - you won't need to do any welding. The Stillen pipe has two bungs, (actually three total if you count the bung on Fed extension piece, which you won't be using). It has one on the rear "arm" for the rear-top O2 sensor, and one on the front arm for the rear-bottom O2 sensor. This allows the rear-bottom O2 sensor to "see" the exact same exhaust as the front-bottom O2 sensor, using only the front pre-cat. The two front O2 sensors will remain just where they are now, if you leave the front precat in place.

I'm really anxious to see how this works out for youbecause I'm considering getting a 2K3 later on! I have a feeling you're going to be very happy with the rsults. Hopefully replacing the rear manifold isn't too mcuh work - you think you could do a write-up on this?

 

Has anyone every had a b-pipe made that would bypass the main cat, and remove the resonator? Seems to me like a lot more HP can be gained by entirely bypassing the main cat and since the precats would still exist using the warpspeed y-pipe, emissions shouldn't be a problem... On the contrary, would this eliminate too much back pressure?

 

Thanks for taking the time to help me out. I am still stumped on my idea and what you are saying though . I will save from further commentary on this for when I get the Y-pipe in my hands.

Also I will definatly do a write up on this including pics and before and after dynoes.

 

i can't wait to get more mods i smell 300hp soon.

-steve

 

I can taste it