Dyno results from mods - 986 Forum - The Community for Porsche Boxster & Cayman Owners

BoxsterSbob · 05-11-2006, 10:39 AM

Nice increase!

Do you think one component has contributed more to the increase?

thanks for the quick reply
bob

MNBoxster · 05-11-2006, 12:22 PM

Hi,

Not to be a Kill-Joy, but without the Stock curves to compare it to, it doesn't mean that much. 247HP at 6200+ RPM is only a Bragging Rights number unless you actually intend to go down the street bouncing off the Limiter.

USABLE Horsepower is what it's all about once you're 3 feet away from the Bar Stool. When compared to the Stock curve, there may not be as much difference as you might think.

Factor in the Cost and you may be on a Fool's Errand. Not saying that you are, but without a comparative curve, there's really no way to tell...

Happy Motoring!... Jim'99

nastyboxster · 05-11-2006, 11:29 PM

Bob

Here are the numbers the manufacturer claims:

Evo air intake +8-10hp
2nd cat bypass +9hp
Borla exhaust - doesn't state but according to other manufacturers 3-5hp.

I think the first 2 yelled the best bang for the buck.

nastyboxster · 05-12-2006, 12:02 AM

MNboxster

I've attached a base dyno from a 2000 S as well as detailed rpm and hp from my dyno. Here is a summary:
Base Mods
3500rpm 112hp 123hp
4000rpm 135hp 146hp
4500rpm 170hp 178hp
5000rpm 187hp 204hp
5500rpm 200hp 212hp
6000rpm 215hp 237hp
6500rpm 215hp 246hp
7000rpm 212hp 245hp

Significant increase above 6000 but also Increase in hp throughout the range. Torque increase also throughout the range.

I agreed that I would rarely get up in the higher range on the streets, but I would during track days and maybe even autocrosses.

So if it feels more powerful, sounds more powerful and dynoed more powerful, it's not more powerful?

986Jim · 05-12-2006, 05:31 AM

Quote:

Originally Posted by nastyboxster

5500rpm 200hp 212hp
6000rpm 215hp 237hp
6500rpm 215hp 246hp
7000rpm 212hp 245hp

I agreed that I would rarely get up in the higher range on the streets, but I would during track days and maybe even autocrosses.

So if it feels more powerful, sounds more powerful and dynoed more powerful, it's not more powerful?

From 5500 to 7000 you see a 12hp - 33hp increase on the way upto redline at the wheels. Thats a seriously good increase and you really will notice that.

Besides this is where you should be spending time while your fun driving anyway. And when you shift at 7000rpm what rpm do you think you land at? Prob around 5800-6000 in your next gear, right in that sweet spot where your making more power. Guess what, you just blew the doors off the other Boxster S trying to keep up to you.

33whp extra at the top of the band will make for 2-3 car lenghts difference in a 1/4 mile, which is top of 3rd gear @ 105mph or so ish... If your car would run a 14.2ish in the 1/4 it should run a 13.7 or so now with that increase. I have been there done that on many cars and 33whp increase is descent for an all motor car and will really be noticed in times at the track.

MNBoxster · 05-12-2006, 05:38 AM

Quote:

Originally Posted by nastyboxster

MNboxster

I've attached a base dyno from a 2000 S as well as detailed rpm and hp from my dyno. Here is a summary:
Base Mods
3500rpm 112hp 123hp
4000rpm 135hp 146hp
4500rpm 170hp 178hp
5000rpm 187hp 204hp
5500rpm 200hp 212hp
6000rpm 215hp 237hp
6500rpm 215hp 246hp
7000rpm 212hp 245hp

Significant increase above 6000 but also Increase in hp throughout the range. Torque increase also throughout the range.

I agreed that I would rarely get up in the higher range on the streets, but I would during track days and maybe even autocrosses.

So if it feels more powerful, sounds more powerful and dynoed more powerful, it's not more powerful?

Hi,

I never said that it wasn't more powerful. But to post a Dyno Sheet with a Billboard-sized 247.whatever HP insert is very enticing and misleading to many here who may be less knowledgeable. There was a lot of pure Braggadocio in the way your initial post was presented - as I replied - Bragging Rights.

The fact is, I suspect you paid $3k+ to achieve 8-12HP in the normal driving range. That works out to over $250/HP. One could achieve the same power-to-weight ratio by trimming 158 lbs. from the Car, which is certainly achievable, for much less.

If modding is your thing (or anyone else's) and you're happy - 'nuff said. But, to make a post without placing it in some context can do more harm than good.

There are lots of people here with limited resources, and they look to this board for info. about the best way to spend those resources. For some, this kind of money is better spent on properly maintaining the Car, or establishing a War Chest for Glitches rather than letting some maintenance issues slip (such as timely replacment of Tires, etc.) because they ran out of $$ doing some Mod which has little or no use for them and their particular Driving Situation.

My personal opinion is that this is a lot of effort and $$ to achieve a modest gain. As a percentage increase, it may seem much bigger, but in truth, you're still left with a sub-250HP Car, hardly a Terror by today's standards...

Happy Motoring!... Jim'99

ScottT · 05-12-2006, 06:01 AM

Jim we know your trying to make a point... and we all know what it is... YOU KNOW IT ALL!

More harm than good? It's a forum website with some helpful tips no body is reading his thread and immediatley writing checks for mods.

The guy got some good HP increase for track days let's all say congrats and move on. Seriously, it appears as though you are way to proud of your opinions. Just make your comments and end it, having the last word all the time makes you look like a fool.

Sorry to be so harsh, but the other forum members and I agree it is getting old.

MNBoxster · 05-12-2006, 06:28 AM

Quote:

Originally Posted by ScottT

Jim we know your trying to make a point... and we all know what it is... YOU KNOW IT ALL!

More harm than good? It's a forum website with some helpful tips no body is reading his thread and immediatley writing checks for mods.

The guy got some good HP increase for track days let's all say congrats and move on. Seriously, it appears as though you are way to proud of your opinions. Just make your comments and end it, having the last word all the time makes you look like a fool.

Sorry to be so harsh, but the other forum members and I agree it is getting old.

Hi,

Does RUDENESS run in your Family, or is it just a Personal Hobby?

If you wish to disagree with me... Fine, but at least let's keep it on point... if you're able...

BTW, who voted you Almighty Spokesperson for this Group? I must have missed it and didn't have the chance to cast my NO Vote!

Happy Motoring!... Jim'99

xclusivecar · 05-12-2006, 01:36 PM

Quote:

Originally Posted by nastyboxster

MNboxster

I've attached a base dyno from a 2000 S as well as detailed rpm and hp from my dyno. Here is a summary:
Base Mods
3500rpm 112hp 123hp
4000rpm 135hp 146hp
4500rpm 170hp 178hp
5000rpm 187hp 204hp
5500rpm 200hp 212hp
6000rpm 215hp 237hp
6500rpm 215hp 246hp
7000rpm 212hp 245hp

Significant increase above 6000 but also Increase in hp throughout the range. Torque increase also throughout the range.

I agreed that I would rarely get up in the higher range on the streets, but I would during track days and maybe even autocrosses.

So if it feels more powerful, sounds more powerful and dynoed more powerful, it's not more powerful?

HUH?????!?!?!?! A base dyno of someone elses car on some other day does nothing for comparison. Each engine will act/react differently depending on all sorts of factors such as temperature, mileage, and dyno used among other things. Now...i'm not a rocket scientist...but I do understand that in order to "compare" anything you must keep the variables AS SIMILAR AS POSSIBLE. Otherwise...your numbers are just that...numbers.