For years I`ve been wanting to do this mod on my VE but just never got around to it until the flex section on my OEM started leaking. I get the pipe and I must say that it`s a pretty impressive looking piece compared to the OEM. So ... I put it on and noticed a change in exhaust note,smoother mid-top RPM (2500-redline) and surprisingly better fuel mileage. Thumbs up to this mod. I intend on having a dyno run to see just how much it gained. I wished I had done this when I had my VG car.

However...I feel like I lost some bottom end torque.Anyone else have this happen ??. I have a 2 1/4" catback, no resonator w/ an 05 Altima SE-R muffler. Stock cat and the WSP pipe.

feedback please....

 

Just ordered a Warpspeed y-pipe and high flow cat. I should get it this week and will install on the weekend. Ill let you know how it goes. BTW I have a vg and with the high flow cat I may see slightly different results from you.

 

you won't see any difference with the cat. I went from a stock one to a WSP-supplied car (Car Sound? I forget) and noticed zilch difference... just passed emissions.

 

Emissions plus a leaky flex pipe are the reasons I got the WSP pipe and cat. If I pass emissions next time with the new cat and have no more noise from the flex then I would be happy. If I gain a little more power and better MPG's I would be even happier. I think my cat is currently slightly clogged or dirty from when I had my bad injectors.

 

sounds like a good reason to me.

the cat shouldn't be clogged anymore if your car is running good. eventually they burn all the crap out of them and are fine.. or they overheat and melt because of too much fuel.

either way, it's 15+ years old. won't hurt to change it.

 

did u guys notice any low speed torque loss too ??

 

on the low end, (below 1500rpm or so) mine bogs like a civic with a huge turbo trying to pull a house.
BUT.. I've built my engine for high end. no need in anything below 3000rpm since I launch the car at 3000 in 1st gear when I want to go fast.
when I'm tooling around town, it doesn't matter much how much power it puts down.


that said, I didn't really notice any loss on the low end with the y pipe on my old engine-- I always had my VTCs rewired, which killed low end anyway. on my built engine, I have a loss in low end because of the head porting and such I've done to it to gain more top end.

 

sounds good..Matt. no worries then. My VE had leaky valve seals.. PIA to repair. I heard that SR20DET valve springs are also a good upgrade.. that true??

 

from what you've heard, is the low end loss majorly noticeable on the VG too? I accidentally forgot to shift, and pulled off the interstate offramp still in 5th.. picked up from 22mph (900rpm?) at part throttle but somehow i kept up with traffic? Not what i meant to do (too much a/t driving lately), but I don't want to lose TOO much of that low end power from the WSP pipe. i like being able to go from 0-45 and never hit 2500rpm and still outrun traffic.

 

Since the VG30e has more available torque at a low RPM (2800 peak I think?) You won't see as drastic of a loss, but the opened up high end; which is what VG's need will even things out and give you a better powerband spectrum overall.

Though I didn't really feel a loss in low end with my warpspeed Y-pipe, I figure it all means you just drive with a little higher rpms if you need it on tap.

 

yea 160hp@5200 and 182tq@2800

the 2nd paragraph is still about the VG, right? or VE? I was thinkin' you had had both and modded both or am i thinking about someone else?

 

You may be thinking of Maximahappy22, he has a white modded VG, and a Black Emerald green Modded VE (with NOS)

I have a modded Pearl 1993 VE, and had a Black Emerald Green 1994 VG (GXE) with only a mod or two, but no warpspeed.

The 2nd paragraph was for people who actually FELT a loss in low end, I didn't so I drive normally... but I've heard VE owners saying they have.

 

i was thinking about you... I just didn't know how many, if any, mods you did to your VG. Maximahappy22 isn't around much is he? i guess he's just lurking and learning. i bought my HAI from him last year.

 

it's a few ft-lb at most.. we're not talking 30 lb or anything.. just a few.

 

hi

 

it`s all good.. VE starts to pull at around 2500-3K RPM. I notice a slight difference from there all the way to redline. I cruise at about 3K @ 75-80 mph on the highway. Thats where i notice the car runs smoother and the fuel gauge doesn`t drop as fast..=)

 

I recall reading a thread from back in the day that discussed applying heatwrap to the wsp-y in order to reduce the low end loss. Any comments on this?

 

Wrapping your exhaust system with exhaust wrap will result in rust and premature decay! Especially mild steel, why not just ceramic coat!

 

yeah ...CMAX is right. I had a 79 Malibu w/ a small block 350. I used the wrap to lower the underhood temps. Unfortunately. when it gets wet, ( from engine cleaning or wet roads) it absorbs the water and can rust out the pipes over time. ( my headers were a victim of that). I thought about switching to a 2" catback to get some torque back. But being that I have a VE engine, it might not benefit in the upper RPM range. I`ll try somethin different to boost more torque out of the car. The idea I had is to use a throttle body spacer for a 240sx w/a KA24DE. Their throttle bodies are the same size as the VE. I seen a few of em on e-bay... worth a shot ???

 

Might as well go all the way and get the VE spacer kit from Aaron92SE

 

i thought about that, but I live in SOCAL and when I saw the kit eliminates the EGR,I thought it may cause a problem w/ my " smog cops".

 

Aaron USED to have a hose you could get to extend the EGR... and I suppose that you can always find a way to re-enable the EGR via custom hoses (cut, welded, extended, flex, you pick your poison) so that it wouldn't be a problem. Email him (or wait for him to see his name on here and post) about that and see if he's got any sitting around. They are no longer offered on the site tho.

 

How can you tell if its a leaky flex pipe? I've only had my 93 for a month so I'm not sure what to look for. It has 138k on the odometer and it also came with a warpspeed CAI. It makes a funny whistling noise when I punch it...which I assume is from the intake...maybe?

 

94maxteamrtv "I think my cat is currently slightly clogged or dirty from when I had my bad injectors." How did your car act when the injectors were bad?

 

I don't know how his was, but when I had one bad injector, the engine rumbled alot and when you gas it you could hear the exhaust coming out uneven. It would sound almost like "putt putt putt". Except it was like a mean putt putt putt...since I had like a crappy aftermarket on there...

 

I knew by the car obviously misfiring. It actually happened on the way home from a long trip to Canada. When I pulled out from a rest station all I saw was black smoke from the rearview mirror and knew the car was running rich and it would not accelerate. Lol I got 150 miles to that one tank. I eventually made it home and tested the injectors and 3 were bad so I replaced all 6. Im hesitant now to make that trip again....

 

Fairly easy to see if the flex is leaking. Go underneath the car and start the engine and if you feel anything from the flex or around it then something is wrong. These maximas seem to have weak flex sections from factory. BTW becareful as the exhaust can get hot down there.

 

maybe park the car on some sand and watch while someone revs it? whever sand flies away, that helps you pinpoint your leak?

seafoam usually helps identify leaks too (did for me)

 

I think you had the warpspeed Y, not CAI.

You can usually smell the exhaust if it leaks.

 

I have a CAI but I still have the original Y pipe. The CAI is red. I'm not sure where my friend got it from though.

 

i want one bro lol

 

Woah, you lost power from the warpspeed? Dang....I was planning on buying it with my birthday money I got last tuesday

 

who said they lost power? there's a small loss in low-end torque, but overall, the mid and high ranges gain like 10% over stock...

 

I guess I could justify it since I do run mine higher than most guys here most of the time. When I see gains of like 5-15hp and someone complaining they lost some somewhere that kinda makes me not want a part anymore. I just don't like seeing cons mixed in with the pros. I'd rather steal power than trade it. I just can't see myself driving the maxima like its a Honda....no fun until the motor is screaming. I want lots of low end torque...well after I get rolling, it's no fun spinning tires at a stop light.

 

on a VG like yours, you won't hardly notice the lowend loss, from what i've heard. the wsp pipe takes a little bit off the strong area of the VG and adds a lot to the weak area of the VG... 15hp in the 5000RPM area is about right, i'd guess maybe 12hp at 4k. haven't got any links to ppl's dyno sheets for the before/after... maybe someone knows of some.

 

I'm not really a genius with power curves or anything but I wouldn't even consider 5000rpm to be weak as is. To me it feels more like its above average compared to other cars on the road when I keep it 2500 or under and then I feel like after it hits maximum torque it just takes off and leaves 4 bangers in the dust (gotta love celica and honda drivers for that). Either way you've got me convinced I could deal with these minimal losses. I do like my torque though.

 

on a VG, torque peaks with 182@2800 and drops to 163@5000, and falls off quickly after that. getting that 163 to go up by 15 would put it at 178, making for a much more level torque band, plus letting it breathe a little better from 5000 to 6000

 

No matter what .. VG or VE .. It was worth the money. Definately an improvement for me in fuel mileage !!! I feel my engine rind more efficient now. Nissan shoulda installed this pipe form assembly line ....lol

 

All negative feelings are gone, now if only I could get one before tomorrow. One of my classmates has a Honda Civic and we're supposed to race (not like seriously race but more of a red light race to the speed limit) and normally I wouldn't worry about a Civic driver but he does have a manual and I'm using an auto and we did a little bit of a warm up earlier today and at this point idk if the parasitic drivetrain losses for my auto are going to cause me to lose - which I don't want because then everyone in my class is going to remind me of how much better Honda is than Nissan (bullcrap I know).

 

exhibition of acceleration is what they call it here, when you just "race" to the speed limit. which i guess is legal, since you are just getting to the speed limit, just faster than everyone else.

but i wouldn't worry about it too much.... you don't have to do anything special to embarrass a civic. just normal driving is enough to do that (as seen by a/t civics never being below 4000rpm unless parked or in a drivethru haha)

but i suspect you'll be one of a long list of guys who "love the wsp pipe even more than they thought they would"... i can't wait to gut and redo my exhaust.