23 replies to this topic

[VAVolvo]

I have currently installed in my 850 NA a K&N high flow cone filter intake, Iridium plugs, most of Stage 0 stuff (except for the plug wires) and will be getting a new exhaust with a high flow cat, flow master muffler and I think 3" piping. Then after that, I'm getting an ECU upgrade with SpeedtuningUSA which will add another 16 HP.

I was wondering if someone could give me a ball park estimate of the HP that I will have when I'm done, and if there is any other upgrade that I left out?

Thankyou!

[FINN]

I dont think running a 3" exhaust on a NA is necessary.

[VAVolvo]

Could be 2 1/2"...I think...yeah...pretty sure....but that is beside the point.

[StickThatClutch]

If you go with like a 2.5" exhuast I think you can net around 8-10 whp. If you go with the 3" I think you'll see worse number due to less backpressure.

Good luck.

[VAVolvo]

Ok, ok...2 1/2"...ENOUGH about the exhaust...

Anything else? Seriously...with a PROPER exhaust, intake, ECU upgrade...what is the added HP?

[JDELUNA]

It will be hard to estimate yor HP as the HP figures that manufactures of the mods can not be added up to a single figure. The reason being is that each HP figure that they give may be measured at a certain RPM. Example is that let us pretend that K&N claims that by adding their intake it will give you 10HP gain, but this is at 5500rpm, the Speedtuning chip may claim 15HP gain, but this is at 6000rpm, Exhaust gives you 7HP but at 3500rpm. As you can see you can not just simply add all these numbers up and get a figure. The best thing to do is to get your car dynoed.

Edited by JDELUNA, 27 October 2004 - 01:36 AM.

[StickThatClutch]

I say 8-10 peak fwhp. Maybe some gains as high as 15 in the midrange. Which isn't too bad.

Edited by StickThatClutch, 27 October 2004 - 01:38 AM.

[VAVolvo]

It will be hard to estimate yor HP as the HP figures that manufactures of the mods can not be added up to a single figure. The reason being is that each HP figure that they give may be measured at a certain RPM. Example is that let us pretend that K&N claims that by adding their intake it will give you 10HP gain, but this is at 5500rpm, the Speedtuning chip may claim 15HP gain, but this is at 6000rpm, Exhaust gives you 7HP but at 3500rpm. As you can see you can not just simply add all these numbers up and get a figure. The best thing to do is to get your car dynoed. 

Thankyou, thankyou very much...makes sense, makes total sense.

I'll look into the dynoed thing, got any info on that?

[turbor850]

8-10 whp

from an exhaust ? ? ? I don't even think turbo 850's get that . . . .

my guess is 168 stock + exhaust/intake/ecu = 190 . . . .

[StickThatClutch]

8-10 whp

from an exhaust ? ? ? I don't even think turbo 850's get that . . . .

my guess is 168 stock + exhaust/intake/ecu = 190 . . . .

That was for everything, chip/exhuast/intake/etc...

Turbos get around 10 whp from the cat back. I dyno'ed my S60 it netted 11.7 whp peak with some ranges seeing almost as much as 20whp.

[JDELUNA]

It will be hard to estimate yor HP as the HP figures that manufactures of the mods can not be added up to a single figure. The reason being is that each HP figure that they give may be measured at a certain RPM. Example is that let us pretend that K&N claims that by adding their intake it will give you 10HP gain, but this is at 5500rpm, the Speedtuning chip may claim 15HP gain, but this is at 6000rpm, Exhaust gives you 7HP but at 3500rpm. As you can see you can not just simply add all these numbers up and get a figure. The best thing to do is to get your car dynoed. 

Thankyou, thankyou very much...makes sense, makes total sense.

I'll look into the dynoed thing, got any info on that?

Well seing that you are in Richmond, Virginia right ?? I looked up places that had DynoJet dynos, you will need to call them to see if they are open to the public, how much it will cost, etc. Good luck and God Bless.

Performance Autosport
12927 Plaza Drive
Richmond 23233
Tel: 804-784-8851

Rosen Autosport
3211 Lanvale Ave.
Richmond 23230
Tel. 804-421-9222

Urban Mechanical
9115 Three Chopt Rd
Richmond 23229
Tel. 804-798-8340


Also the best thing to do is dyno yor car completely STOCK before you make any mods to it so that you will have a baseline, then after the mods to see if any gains and how much.

Edited by JDELUNA, 27 October 2004 - 02:17 AM.

[VAVolvo]

Well seing that you are in Richmond, Virginia right ?? I looked up places that had DynoJet dynos, you will need to call them to see if they are open to the public, how much it will cost, etc. Good luck and God Bless. 

Performance Autosport
12927 Plaza Drive
Richmond 23233
Tel: 804-784-8851

Rosen Autosport
3211 Lanvale Ave.
Richmond 23230
Tel. 804-421-9222

Urban Mechanical
9115 Three Chopt Rd
Richmond 23229
Tel. 804-798-8340


Also the best thing to do is dyno yor car completely STOCK before you make any mods to it so that you will have a baseline, then after the mods to see if any gains and how much.

Thanks very much, this is some good info and I think I already know where one of them is. PEACE!

[prasamin]

8-10 whp

from an exhaust ? ? ? I don't even think turbo 850's get that . . . .

my guess is 168 stock + exhaust/intake/ecu = 190 . . . .

That was for everything, chip/exhuast/intake/etc...

Turbos get around 10 whp from the cat back. I dyno'ed my S60 it netted 11.7 whp peak with some ranges seeing almost as much as 20whp.

ummm, s60.....850 NA....i think those cars are pretty different...i would say expect a MAX of 25 hp gain when all is said and done, but realistically maybe 20 hp....if you had a hpt, then i'd put you at a good 40 hp gain with all that.

[volvo4lif3]

i would like to say that stock plain jane 850's had 150 hp. My dad had an 97 n/a 850 , that was until he hit into an 18 wheeler, and survived

[Karlson]

If you go with like a 2.5" exhuast I think you can net around 8-10 whp. If you go with the 3" I think you'll see worse number due to less backpressure.

Good luck.

it is funny picture dude

[volflo]

8-10 whp

from an exhaust ? ? ? I don't even think turbo 850's get that . . . .

..... right.
but on the other hand id really be curious if i threw my orig exhaust back in. i think i d loose 30hp......perhaps more?

[Ping138]

Volflo is right, a good turbo back setup will get you about 30hp thats a fairly accurate guess, as for our N/A friend, i posted sometime ago about ECU's not really helping N/A motors, and why, search and you'll find it, worth reading before you waste money, also about the net hp, it does not really matter, hp has very little to do with speed, i know i know i'm going to get flamed about this, but i'm willing to back that statement up if anyone is still interested and reading this post, otherwise i'll not waste time typing it. The bottom line is run it at the track, because HP LIES!!!!!

[theunderlord]

The bottom line is run it at the track.

True story. this is one of the only ways to figure your shiz out. And this is the funnest way to figure it out too..

[TorqueSteer]

Horsepower just sounds good and sells cars, bottom line. I really dont know why anyone could care about horsepower since it varies so much at each different rpm. To see if mods work, go to the track and test it. Track times are for the most part constant and what counts...

[VAVolvo]

Horsepower just sounds good and sells cars, bottom line. I really dont know why anyone could care about horsepower since it varies so much at each different rpm. To see if mods work, go to the track and test it. Track times are for the most part constant and what counts...

I'd like to say this post is somewhat inspiring and refreshing. For what it's worth, the car has performed much better with the intake + exhaust set-up. I suppose the HP will have little to do with anything if I get the most out of my car. The car has to fit me and so far it is shaping up nicely. I suppose I really don't need anyone to tell me the HP that I have, because I've owned and driven several high performance cars, including a '02 WRX for a while (not mine), and I'm still very impressed with the output I'm getting with my Volvo right now.

Thankyou for your input!