GranSport exhaust mods - picture heavy thread
- Thread starter MAF260
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Chrisbassett
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Is France ever not on holiday/go slow/strike/lunch?
Rolling road session took place this morning so that I have an initial figure for comparison. Very interesting seeing a hub dyno work. I was pleased to see a reading of 359bhp at the hub/wheels which equates to 422bhp at the flywheel (based on 15% loss through the transmission/driveline). Torque works out to 368lbft. Peak power was at just under 7100rpm, peak torque was at 5700rpm.
The gain over the published standard outputs of 400bhp and 333lbft could be attributed to the Larini rear boxes fitted already.
We also did a power run with Sport mode switched off to see if the valves in the rear boxes had any effect. They open automatically at 3000rpm (I think), so it would only make a difference below that. There was absolutely no difference, the curve was almost identical.
The gain over the published standard outputs of 400bhp and 333lbft could be attributed to the Larini rear boxes fitted already.
We also did a power run with Sport mode switched off to see if the valves in the rear boxes had any effect. They open automatically at 3000rpm (I think), so it would only make a difference below that. There was absolutely no difference, the curve was almost identical.
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Thanks for sharing that MAF. Interesting that the valves don't appear to make the slightest bit of difference. So are they purely for our aural pleasure? Must be. Anyway, I very much look forward to the post-exhaust readings.
conaero
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Initial findings:
jeeeez!!
Video please MAF!
Chrisbassett
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Hurrah! Team SM is completely hatstand. Well done, MAF!
zagatoes30
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conaero
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I still need proof......come on MAF, stop driving through the towns, admiring yourself in the shop windows (that will no doubt be rattling with your presence) and take a bloody video!
I then, maybe, just maybe, will respond with a video of mine up on the ramp with only the headers attached wooohhaaaa...rooooaaarrr...spit, crackle, snarl!
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Matt - yes please!
conaero
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Ill have to see if the neighbours are out tomorrow otherwise they will think the end of the world has come
marios kriticos
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Mark how is the car ??
Marios
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marios kriticos
SPONSOR: Autosheild
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Benny , you started all this
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