Dyno results from mods

[clubhead]

Originally Posted by nastyboxster

...
Question for dyno experts
1. How much of a difference can it vary? (clubhead mentioned 2-3hp)
2. If it's only 2-3hp, does it matter since I won't be able to feel it anyways.?
3. I've seen several Boxster S dynos with no mods and it's between 220-225rwhp. Anyone seen any with below or above it?

Need to qualify I'm no dyno expert but I'll try.

The main concern if you dyno between a period of time can also be attributed to the machine itself. These machines are sensitive equipment and by themselves, will already have a certain amount of variance. This will be excerbated by other elements like intake temp, humidity, car's engine oil temp, new/old plugs, etc.

Now IF the machine owner recalibrated the dyno in between (and you will not necessay know this), the variance would even be greater.

So to be safe, do the before dyno before you plug in the new program. Plug in the new program and go for a 20 mins drive. Then do the dyno again. It's a hassle but it's the only way to satisfy yourself that those gains are mainly due to your new program. The variance can be 2-3bhp but if the gains are 5bhp, you may be getting only 2 bhp increase with the variance taken into account. This is assuming the machine read lower than actual. Aren't you gonna feel ****************ty if you've spent $1k on a program and thought you've only gained 2bhp but actually it's 5bhp? Or vice versa....

[986Jim]

Here is an interesting article from Turbo Magazine about dyno's..

http://www.turbomagazine.com/tech/0306tur_dynodash/

I have been on a DynoJet 248 and Clayton Waterbreak AWD dyno..

The Dynojet 248 was always very close whenever I used it. They ahve a sunken 1000lbs roller in the floor. They have the most repeatable results time after time, seem to be the most fool proof too.

[nastyboxster]

ClemsonBoxster

I got the bypass pipes from Fabspeed. I was charged 2 hours or Approx $200cdn for the Evo Air intake by a Porsche shop. 1 hour or $100 for the bypass pipes. I recommend the Air intake done by a Posche shop or someone who has done it on a boxster before, but the pipes can be done by anyone. Make sure you get a firm quote for the intake since the actual hours spent by the shop was closer to 5 hours.

With regards to the muffler, I got the Borla by default. Someone just purchased it at our local club and said it was too loud for him, so I got a deal on it. I was going to get the fabspeed one. It depends on your taste for the sound. The Borla is very loud and have low rev resonance, but it is very sweet when you rev it up. The Fabspeed is quietier, but don't know how much. The Borla is cheaper and lighter.

So far, I've gotten a lot of complements on the sound, especially on the track.

[alex911s]

Originally Posted by nastyboxster

Just completed a dyno the other day and the results look pretty good. 247.6rwhp 217lbs of torque. 3 pulls altogether on the same day. My first pull yelled 231rwhp, but I didn't know that I was suppose to "floor the pedal immediately"

I was a bit skeptical at first since the numbers were higher than I expected, but the others in the group said their results were what they expected.

My mods are as follows:

Evo air intake
2nd cat bypass pipes
Borla muffler

I plan to do the powerchip in the next few weeks and I'll dyno again.

Cool Stuff and Nasty mods,
I have sched, HR springs, evo air intake and the german ebay modified exhaust,LOL I have a credit from giac from my cayenne turbo flash, so I probably be doing that too.. the ecu flash will definitely help especially you already have the intake and exhaust..you'll see big diffetence .. good luck man!!
with these NA engines that's all you could do unless youre thinking of EVOM supercharger

[MNBoxster]

Hi,

I'm confused, all this time I thought you were doing the Mods yourself, but I see now that you're paying someone else to do it. That can really get expensive. My personal preference is to have someone else touch my car as little as possible, not just from the $$ standpoint, but then I'm sure it's done right. To each his own...

Happy Motoring!... Jim'99

[986Jim]

I installed the EVO intake myself and to be honest it was all quite easy. The only part that I had a problem with is getting the stock air box out. That bolt under the car was hard to get to, eventually I found an easy way to get at it and the rest was cake. I could re-do that install now in two hours start to finish with clean hands and 1 beer consumed.

Other thing is even if the intake is not made for your car it will fit. I bought Clubheads intake and he has a Boxster S. I had to buy some extra silicone to make up a shortfall in the piping of about 4" and thats it, no big deal really. It still fits fine, just has to do some minor adjustments...

[clubhead]

Originally Posted by alex911s

Cool Stuff and Nasty mods,
...and the german ebay modified exhaust,...

I've been reading about this exhaust which claims to make the Boxster sound like a 996. How true is that? I'm very tempted to get one of these, just that they don't seem to have one for the S readily available.

[alex911s]

Originally Posted by clubhead

I've been reading about this exhaust which claims to make the Boxster sound like a 996. How true is that? I'm very tempted to get one of these, just that they don't seem to have one for the S readily available.

Hey man,
why dont you wait till i install it.. actually they do have one for the S right away
cause I got mine in 10 days... if you look under the sellers store
for some reason it doesnt comeout just searching boxster.. that;s what i did.
here's the link for all of them

http://stores.ebay.com/OETTLES-TUNING-und-KAROSSERIESHOP

[clubhead]

Originally Posted by alex911s

Hey man,
why dont you wait till i install it..

Great, let me know the outcome when you've got yours on the car. I'm currently running the Dansk aftermarket muffler and before that, the Tequipment Sports Muffler. I missed the unique sound of the Tequipment but the like the louder exhaust from the Dansk. If only both the sound and volume can be combined.... which is what this muffler seem to be offering.

[Adam]

Originally Posted by clubhead

I've been reading about this exhaust which claims to make the Boxster sound like a 996. How true is that? I'm very tempted to get one of these, just that they don't seem to have one for the S readily available.

Are you talking about the 996 on the fabspeed site because a stock 996 sounds kindof...I don't know...not too impressive and less aggressive than a 986.

[clubhead]

Originally Posted by Adam

Are you talking about the 996 on the fabspeed site because a stock 996 sounds kindof...I don't know...not too impressive and less aggressive than a 986.

Nope. I'm talking about those 996 which comes with the Tequipment Sports Exhaust system...

[silvered]

So Nastyboxster: did you ever buy the Powerchip and test the gains again?

This thread just died

Trav!

[B&TRepair]

Originally Posted by Brucelee

Lets play nice boys!

Each of us has our own perspective on what we value in our Boxes. Lets respect that if we can.

Now, if anyone advocates street racing, well, that is another matter.

Thanks for keeping this forum free of flaming.

Bruce,

Why don't you and Jim just get a room. The guy is a blatent know it all **************************** who really is the troll problem in the house that Brucelee built. For reasons unknown you always run to protect him when someone finally, inevitably, calls him on his ****************. The dude needs a serious blanket party, most people in here see that, except his almighty protector. An admitted gambler castigating others about wasting money...cough * Hypocrite* cough, priceless..

[nastyboxster]

Silvered

I didn't get the powerchip yet, but if I keep the car, I'll probably do it. Looking at 996TT's maybe. What's the price for 986forum members? Is it $600?

[steve00s]

Nastyboxster, who does chipping in Vancouver? or were you going to ship it out?
Thanks.

[nastyboxster]

There is a place call CG motorsports in Richmond, but they are a GIAC dealer. That's why I haven't done the chip yet since I have to take out the ECU and ship it to Powerchip.

[xclusivecar]

Originally Posted by B&TRepair

Bruce,

Why don't you and Jim just get a room. The guy is a blatent know it all **************************** who really is the troll problem in the house that Brucelee built. For reasons unknown you always run to protect him when someone finally, inevitably, calls him on his ****************. The dude needs a serious blanket party, most people in here see that, except his almighty protector. An admitted gambler castigating others about wasting money...cough * Hypocrite* cough, priceless..

Where did this come from?!?!?! Nice first post...the question posted most recently was a follow up to dyno results...not a re-hash from 9 months ago...

[Dohertycm]

A 2000 Boxster S from the Factory comes with 250hp and 220lbs of torqe at 6250... It seems to me that you have made any increases over stock with all of your mods. Unless you dont have an S.

Im looking at 3 different sources and they all say the same thing.

[Adam]

Originally Posted by Dohertycm

A 2000 Boxster S from the Factory comes with 250hp and 220lbs of torqe at 6250... It seems to me that you have made any increases over stock with all of your mods. Unless you dont have an S.

Im looking at 3 different sources and they all say the same thing.

^ That's the power at the crank. Wheel hp is a whole different ball of wax.

[nastyboxster]

The general formula for the crank is 1.1 to 1.2 x the hp to the wheel. So 247 x 1.1 is about 272 to the crank.