Best extra BHP mods
#76
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The USA price is roughly 7k for the MoTeC installed. The cams are another $995 + installation and that will vary with what else needs to be done. In most cases, you'd do the cams when you need a top end which is 20 hours labor + machining the heads, new valve springs, retainers, valve job, and possibly new valves.
#77
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My mechanic has a chip that will give me 288 bhp on my standard C2. However, he says that it will reduce my fuel economy by 2 km/l (don't know what it is in mpg, but probably around 25%). I had my BMW 540i chipped a couple of years ago and it increased my fuel economy by 33% ! Why the significant difference?
#78
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"I had my BMW 540i chipped a couple of years ago and it increased my fuel economy by 33%"
Please! Batteries low in the calculator? MPG (or MPL) went from 15 to 20
(or 3.75 to 5.00), hardly! Then the BMW marketing guys would have had
a very very simple way to make a modification to comply with mileage
standards or do one better than the competition. Most likely someone
stopped wearing those old "lead" shoes after the mod.
Bottom line: It doesn't happen!
Please! Batteries low in the calculator? MPG (or MPL) went from 15 to 20
(or 3.75 to 5.00), hardly! Then the BMW marketing guys would have had
a very very simple way to make a modification to comply with mileage
standards or do one better than the competition. Most likely someone
stopped wearing those old "lead" shoes after the mod.
Bottom line: It doesn't happen!
#79
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"I had my BMW 540i chipped a couple of years ago and it increased my fuel economy by 33%"
Please! Batteries low in the calculator? MPG (or MPL) went from 15 to 20
(or 3.75 to 5.00), hardly! Then the BMW marketing guys would have had
a very very simple way to make a modification to comply with mileage
standards or do one better than the competition. Most likely someone
stopped wearing those old "lead" shoes after the mod.
Bottom line: It doesn't happen!
Please! Batteries low in the calculator? MPG (or MPL) went from 15 to 20
(or 3.75 to 5.00), hardly! Then the BMW marketing guys would have had
a very very simple way to make a modification to comply with mileage
standards or do one better than the competition. Most likely someone
stopped wearing those old "lead" shoes after the mod.
Bottom line: It doesn't happen!
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#84
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Hey, I may be a motronic moron
, but on all the cars I have owned (and chipped), I have experienced much better fuel economy as well as a significant increase in torque and output. This is my first Porsche, and I cannot fathom why the fuel economy will go the other way?
And yes, I also like to have my cake and eat it as well...
![Frown](https://rennlist.com/forums/images/smilies/frown.gif)
And yes, I also like to have my cake and eat it as well...
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#85
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I have read many threads that if you reprogram a Saab 9-3, it will get better mpg. However I am not sure if it is significant. Also these are turbo cars.
#86
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To get back on track, when installing 9M Motec, has there been any research done on the effect of different exhaust systems, i.e. GHL, Fabspeed, B&B compared to the stock system, which works better?
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#88
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Yes, a good set of headers will make gains on a stock 964 or 964RS engine on Motec, the best can lift the top end power by 10hp, however the average is around 5 and on some we measured losses. The set that made the most gains throughout the rpm range were our own design. I'll post a dyno plot to verify this statement later.
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Hey, I may be a motronic moron
, but on all the cars I have owned (and chipped), I have experienced much better fuel economy as well as a significant increase in torque and output. This is my first Porsche, and I cannot fathom why the fuel economy will go the other way?
And yes, I also like to have my cake and eat it as well...![ducking](https://rennlist.com/forums/graemlins/icon107.gif)
![Frown](https://rennlist.com/forums/images/smilies/frown.gif)
And yes, I also like to have my cake and eat it as well...
![ducking](https://rennlist.com/forums/graemlins/icon107.gif)
Please don't take all our comments too seriously. As a relative newcomer what you won't know yet is that there are some very "opinionated" Motronic experts on Rennlist who - how can I put this? - who let's just say are less than tactful in getting their point across. If you wish to be "educated", do a search on 964 9m Motec conversions and read all the threads you find.
With respect to your fuel efficiency comment, I would think that a 10% improvement is possible if you combine the remapping with a corresponding 10% improvement in Volumetric Efficiency, like you would achieve by fitting an air flow meter bypass on the intake and removed the cat from the exhaust.