I tried the search function but it does not work. I was looking at a new Y pipe, and was curious about how much hp gain a Warpspeed Y pipe and carsound cat would give me. any input is appreciated

 

On an 89 GXE...

You probably would go from 18.5 in the quarter mile to 18 flat.

But thats just speculation.

 

vg are stock mid to high 16's


gains are there.. the freer flow of air is noticable.. especially in my max

 

A vg manual in GOOD condition will run mid to high 16's.

A tired vg auto will run much slower. Most 89's are tired vg's, so I figure high 17's to around mid 18's is more realistic.

 

um my stock auto vg ran 16.56


so i think a stock vg with 5 spd would run low 16's

 

you will see ATLEAST 500hp gains from a Y pipe

only expect .20 in the 1/4

 

what are we talking about here? 10-15hp?

 

with a y-pipe you get VTEC!!!!!

and 250 ft lbs of torque

mad vTaK y0

 

i just installed mine this weekend and im pretty impressed with the differance in performance with JUST the Y-pipe, i should be putting the rest of the exhaust on begining of next week, including the high flow cat etc. once i have that much open out the ***, im probubly gonna go get myself a frankencar intake just to let more air in since ill be able to let that much more out! so i cant give you any HP numbers, but its worth the money, ill tell ya that.

Doug

 

i cannot misinform anyone on actual hp gains, but i have the y-pipe and everything else. get it. don't ask anymore questions. just get it. you'll flip out. get CAI at the same time if it isn't already in your car.

 

it looks like a y pipe is very close in the future. car is going to the dealership tomorrow to be looked at due to the fact that there is more than likely a hole in the stock y pipe from an accident where i ran over something two months ago. if so, off to warpspeedperformance.com to order the stuff for the swap! btw, rustangkilla, my tranny was rebuilt Novermber 2002, so its not tired. engine is in good shape too.

 

just tally up everything that the factory did to make the car quiet and smooth. and just remove it all. replace it with loud hi-flow components. and then lower the car. and you are on a good track. especially with your GXE sleeper look going on.

or, pardon if i judge you a bit, but is seems like you probably are not down with loud things as you are a GXE'r. then do use hi-flow everything but use stock 5th gen muffler. car will not be *as* loud. but y-pipe will change your car's sound forever. you will like it, by the way.

 

I got my Warpspeed Y-pipe at the begining of the summer and I have to say it is a love hate relationship. The first thing I noticed was the loss of torque on the lower end which I was expecting. The high end definitly did pick up quite a bit though. The thing that bother's me most is the tranny is still set for shifts with the old torque band. I sometimes find the tranny in a high gear trying to accelerate when it should down shift and get into where the power band is.

All told I have mixed feelings. I miss my torque but I'm happy my car has a little more to give on the top end.

 

yes and hmmm. i noticed a gain throughout the entire powerband, with a manual. the most gain is the top end though. yes that is true. generally, with the manual SE, i have far far more latitude, if you will, with all-out acceleration zipping in and out of traffic. way more. especially with the aluminum flywheel. the engine is awake.

 

humbug. all that it turned out to be was a loose EGR tube. but it turned out I had split and cracking control arm bushings so I'm glad I went to the dealership. got those fixed. ::whew::

 

Well of course you had split and cracking control arm bushings, you went to the dealership!

I'm guessing they also said your car needed a new johnson rod.

 

hey i had 2 johnson rods installed yesterday. they gave me a smooth 610 hp gain. LOL

 

no, they said no such thing, and found nothing else wrong with the car. some people, i swear, like kids.

 

Its just that most dealership mechanics work on a commision, and they make more if they find things wrong with the car that people let them fix. Maybe your dealership isn't like the ones around me.

 

I'm not too familiar with the exhaust area of cars, more into the electronics part, but if I buy one of these Y pipes, will I have to buy the rest of the exhaust afterwards or would I be able to connect it to the end of my existing exhaust? And how hard of an install would it be for the y pipe?

 

the hardest part is taking all the rusted and jammed bolts off.. after that it is all bolt on.. its extreamly easy to install y pipe and exhust. just make sure you have extra hands so you can do it in no time. y pipe is held in by three bolts on each header. total of 6. Then you use the old oxygen sensor or get a new one(suggested) and bolt up the old( or get a new hiflow) catalytic converter, after that comes the b pipe then the muffler

 

How tight do you make the new bolts? And should you use anti sieze stuff if you plan on taking them off again?

 

A johnson rod?

 

Does anyone have a dyno that shows a loss in power from adding the y pipe? I really want to pick one up and would like to know how much power I bould be losing/ gaining and where. Also, can anyone explain why there is a loss in power??

 

all gains
put it like this. Yeah your engine can breather in air(intake CAI POP charger) but how can it breath out if the air flow is constrained. Adding a y pipe lets the engine breath out better, so better gains and frees up hp. On n/a engines you can get anywhere from 3-10 hp depending on the bolt ons and what type of forced induction your using. I seen Huge gains from my y pipe. THe engine just climbs.....

 

Yeah, they attach to the muffler bearing and keep it from squirming.

 

I'm sorry I guess I asked the wrong question. I meant the loss of low end power. I keep hearing that there is a loss in low end power and I'm really confused as of why. I was thinking the same thing as far as the engine breathing better.

 

how much is a nice y pipe gonna cost? i just got my 89SE and lookin to do some mods to it. just seeing whats best mods right away.

 

Like they said already, it really just depends on what type of mods you have that will factor in to how much power you gain. You WILL gain more then you lose, don't get that part confused. Most guy's have reported a loss in the low end say from 1500rpm to 3000rpm. This is what I have found to be true in my case. However, once it passes 3000rpm it starts to come alive and pick up some serious steam. In my experience I traded the low end torque for some high end horsepower.

The thing about the VG is most of the torque is on the lower side of the RPM. Not a lot of power is available up top in it's stock form because it is so restricted in breathing, the y-pipe is just the begining of removing some of the restricted breathing. Cam's are also a great mod that will also open up the top end breathing.

As to why there is a loss from what I understand it has to do with back pressure, the stock y pipe is more restrictive and thus creates more back pressure. I'm not sure what back pressure has to do with torque, maybe someone else can explain that one.

 

is they any mod that can increase my low end torque then, cause thats what i have problems with?

 

advance your timing! it works for low end power.

 

If you wan't torque then you are messing with the wrong kind of cars. Any decent old school V8 will give you your torque. The main ingrediant for torque is displacement.

It isn't hard to get a small engine to put out huge horsepower numbers because it is related to engine rpm. However torque is a measurement of power and is not calculated using RPM.

With that said, maybe a few of the guys here can give you a few tips on what you can do with what you have. Also keep in mind that the VG starts off with 180lb of torque which is very respectable to begin with. Most Honda's and Toyotas for the same time period were a lot less.

 

I'm puzzled by these reports of low end losses with the Y-pipe. I certainly didn't notice any low end loss on my VG 5 speed. Quite the contrary. The Y-pipe seemed to give an increase over the entire power band. If there is a loss, it would be related to lower back pressure - Thats why headers optimized for high end have bigger tubing, and smaller tubing on those optimized for low end. But I put on an entire mandrel bent cat back with a very low restriction muffler at the same time as the Y-pipe, and so I should have gotten the low end loss if there is any. Dallas at Warpseed told me based on dyno tests they had run on the VG with y-pipe, to expect 16-18hp gain. And that's about what it felt like.

Could this low end loss be on the VE engine only (92-94SE)????

 

i somewhat agree, somewhat disagree: you are correct about displacement, but torque is also hugely affected by stroke. longer stroke will give huge torque gains in the low-end -- the place where most of us want the pickup. although with the shorter con rods, the piston dwell time is less with long stroke and you lose higher-end torque ultimately. this is the tragedy of the KA motor in the american versions of the S14.

and i reiterate that the y-pipe on the VG does not perceptibly compromise low-end torque, if at all. i experienced power gains throughout the entire powerband. if anything, the VG came alive in general. like a different engine.