Dyno Report : GIAC DME Stage 3 Program on Boxster S

[Brucelee]

Disappointing to say the least.

Keep us posted and good luck!

[cyclocross]

Did you dyno the unmodified motor with the stock ECU? If so, please publish that curve so we can make the comparison. Thanks.

[RandallNeighbour]

I keep reading posts on this forum and others that talk about how expensive mods are
for the Boxster and how little they do... I also read lots of sad stories like this one stating a
LOSS of HP after thousands have been invested.

Just proves to me that my stock engine with its stock intake, exhaust and ECU is the best I'm
going to get without a potential loss of cash AND power.

I'll save my pennies for a used 2005 S which I will buy in 2009 or 2010.
Sounds like a long time from now, but the older I get, the faster the years fly by and more
patient I become! I'll wait and get more power out of my next Boxster, which will be kept stock as well.

[Lux]

Wow. That really sucks. That dip in the 6K range is definitely not good. I still think that the parts have the potential to make good power. Obviously the tuning is out of whack. But how much out of whack is the question.

At this point, everything is a guess. You need cold hard facts to decide on a gameplan. I really think you need to get a proper air/fuel reading with your dyno runs. There's too many variables and guessing what to fix with 2/3rds of the info will only cause more frustration and a lighter wallet.



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[clubhead]

Originally Posted by Lux

I really think you need to get a proper air/fuel reading with your dyno runs. There's too many variables and guessing what to fix with 2/3rds of the info will only cause more frustration and a lighter wallet.
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I was going to do that but there's really no point. Even if I found that the car is running lean, there's nothing I can do about it. I don't have a program to alter the fuel/ignition map. And I can hardly just tell Evolution Motorsports that I'm running lean at certain rpm so please increase the fuel at that rpm.

Like I said, I'm probably going to revert to stock and get someone to do a custom map on the dyno... Only issue is $$.

[Adam]

Thx for sharing all this info. I'm not sure if I was reading this right but is your max hp 238 at the wheels? A bone stock S would have about 220hp at he wheels give or take because of the difference between tip/maunual parasitic driveline loss. That's pretty good if that is correct. It would still be nice to have a bone-stock baseline, but 220hp is probably pretty close. I calculated the driveline loss and it looks like you are making about 273hp at the crank which is pretty respectable. Like you said though, the GIAC programming didn't do squat. It looks like the Dansk headers and cats alone gave you the hp boost and perform as claimed. Keep us posted.

[clubhead]

Yes, from the dyno, it's about 238bhp now. Used to be 239 before the GIAC program but that 1bhp is probably negligible

My 'baseline' dyno with Dansk headers is 223bhp if I remember correctly. Wished I had done 1 dyno under totally stock conditions though...

[clubhead]

Originally Posted by cyclocross

Did you dyno the unmodified motor with the stock ECU? If so, please publish that curve so we can make the comparison. Thanks.

Nope. The basedyno I did was stock ECU with Dansk headers. You can do a search for that in this forum as I posted the dyno report as well...