warpz0r

are the JMM dev kits rated at the rear or at the engine?

warpz0r

rwkw.. found it....

younggun

as youve probably read, the realiabilty of these read outs is some what sketchy depending who you talk to, although I think ill still get them fitted. Just though you should no.

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cogdoc

Yeah, like younggun said, there is a bit of debate on a few sites over this. I feel these outputs are reasonable IF EVERYTHING is optimal, the engine fresh, the transmission good, inlet optimal, head gasket intact etc etc. I'd make sure these other things were sorted first....

younggun

yeah totally agree with cogdoc, im not saying anything bad about them, just think everyone should no all opinions before buying. (i have never had a mock kit, but talked to them several times on the phone, they seem to know there stuff)

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cogdoc

That said, I'm doing a DEV 5 at x-mas.

MADNC_8

also, people whinge about maybe 2rwkw difference, all dynos give different readings, sometimes upto and over 10rwkw.

sometimes the same dyno gives totally diferant readings for the same car.

i prefer to think of a dyno as a measure of your upgrades rather than exact power, like ive just had a dyno done, 114rwkw, so theres a base kw, now im gonna mod it if i get lower i know ive gone bad hehe

gm dstroya

very very true,

best indiction of power is mph over the quater mile NOT et times.

cheers.joe.

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Soxx

I can't agree with that.
400m times are again only useful for the same car, however to compare with other cars it's no more reliable than dynos, and in fact less so.

As you know, 400m times are dictated not only by power, but weight, traction, gearing, suspension, driver, weather, etc.

Dynos, IMO are actually more representative than 400m times.
At least you can throw several cars on the same dyno on the same day and have very accurate results, this can't be done with 400m times as even more things need to be controlled, down to even having the same tires, etc.

Rick.

Walkinshaw

trap speed (MPH) has not much to do with traction/weigh, but 90% dependant on power. see you could get a great launch and run a 14.5 @93mph, but you might spin off the line and only run a 15.3 the next run but at 94mph.

The morso BHP/MPH calculator is the bible for may drag teams, who have so much power dynos are usless, they measure their power in their trap speeds/

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Ill take it as a complement i think.............