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toplad
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Posts posted by toplad
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I don't know where you got the 15 BHP, but it's incorrect, the headers give you 12 and a remap at Ninemeister is 20 BHP(ish). The lot would cost a little over a grand, I'd be happy with that for cost per pound stakes. Super Charging is in the area of 6K which is a bit too steep for me.
or TT :clapping: :thumbup:
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I doubt you'll see 40 Hp from the mods you mentioned. I put headers, Fabspeed mufflers, and a piggyback chip on a 99 C2 and saw a total of 18 HP on the dyno. I also ran the car on the track without the mufflers using Fabspeed Supercups and while the car was louder and lighter, I doubt there was any more HP.
I'd suggest that rather than removing the cats, that you look into a muffler bypass instead. Muffler bypass pipes are readily available and will save considerable weight, if you can stand the noise. A cat bypass would not only make the car fail emissions, you'll have to get a custom pipe made up. You also have to be very careful when changing the exhaust back pressure on the M96. There are lots of changes and parts out there that will actually decrease HP. I'd suggest working with a reputable tuner and someone who will give you before and after dyno sheets.
Karl
Thanks for the Advice Karl, just the sort of input I was hoping for.
I'm just going off the web site info regarding the power gains.
I thought if I used the headers (A claim of 12BHP) and the Decat pipes (a claim of 9 BHP) and a local tuner can add 20BHP with re-programing of the ECU on the rolling road, I'd hoped for the a bit more than 18 BHP. I not worried about the emissions test btw. I'm prepared to have the "cats" reinstalled once a year for the yearly emission test.
I've spoken to a local exhaust manufacturer and can have anything I like made up. I'm not sure I know what you mean when you say muffler bypass, can you explain?
The main thing I'm concerned about is the decreased back pressure in the exhaust system due to cat removal.
Regards
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Thinking of decatting my 996, has any one gone down a similar route, or maybe headers?
www.design911.co.uk/index.htm?Region=UK
Click on Exhaust for 996
I've decatted before and been happy with the results in the past. With a map, headers, and decat you could be looking at a gain in the region of 40BHP
Anyone else?
Engine under powered?
in 986 Series (Boxster, Boxster S)
Posted
Hi
Glad to be back in Porsche ownership with a cheap boxster S, I used to have an 03 a few years ago but I don't really remember the characteristics of the engine. Mine seems to have good top end, but a bit flat below 3200 revs.
I.e, on the motorway in 6th at 75mph and you put your foot down, the pickup is slow, like a couple of mph's every couple of seconds.
Engine definitely ramps in past 3300 revs and the car feels fast
Does this sound right.