So there has been some talk about what kind of acceleration times we are looking at when those who want to upgrade to the KWSC.
I did some research online yesterday to look at weights of cars that some people were mentioning that they'd like to see their supercharged fits keep up with, especially since, if you are anything like me, supercharging a cheaper (price wise) car, is usually more cost effective than dishing out 5 more years of car payments on something more powerful.
what i'm posting may have been useful in the kraftwerks thread, but i knew this was going to be long and i didn't want to sidetrack the thread.
There are 2 cars in particular i'll be discussing: the current Si sedan, and the current civic EX sedan.
The si is one of the newer cars i'd like to be able to at least suprise every now and again at a stoplight.
I used to be a an owner of an 06 civic ex sedan, which according to the newest dyno sheet from kraftwerks, makes around the same hp to the wheels (slightly more tq and hp, but more weight as well.) many have also brought up the fact that the r18 would be the perfect engine for a fit si, given its tq and overall hp.
the following...erm...well 'table' i guess you could say shows basic specs, and then how many lbs each unit of horsepower has to lug around. the results i thought were pretty interesting. i know they don't tell the whole story, but this is all subjective.
So here is what i figured:
07 Honda civic Si sedan:
197 hp @7800rpm
139lb-ft tq @ 6100 rpm
weight: 2945lbs
lbs per hp: 14.95
07 Honda Civic EX sedan:
140hp @ 6300 rpm
128lb-ft tq @ 4300rpm
weight: 2738lbs
lbs per hp:19.56
07 Honda Fit:
109hp @ 5800 rpm
105lb-ft tq @ 4800 rpm
weight: 2471lbs
lbs per hp: 22.67
07 Kraftwerks Supercharged Honda Fit (base kit, no other mods)
145hp@ 6000 rpm
129 lb-ft tq @ 5800 rpm
weight: 2471lbs
lbs per hp:17.04
if you are wondering how i got the numbers for the KWSC i just figured the gains from stock to supercharged, and then added that to the engine producing hp numbers from honda. these numbers are still only a guesstimate, but, well, you know.
The kraftwerks fit losses almost 6lbs per hp, which is amazing! its not as good of a power to weight ratio as the civic si, (and its even more apparent when you take into consideration the ligher weight coupe) but its still a much better number! its better than an ex sedan, and granted that one of those runs 0-60 in about eight some odd seconds, a mid 7 second fit is not too shabby!
JDM chris' fit is even more powerful: judging by the numbers in siphon, hes at an estimated 160 engine producing hp, which give him a power to weight ratio of about 15.44 lbs per hp, almost as good as the si, and almost no real world difference! (remember his kit has the upgraded injectors, a cat delete, and full exhaust, and he has lightweight wheels.)
Again guys, this is all speculation and if it helps give 1 person a better idea of how his or her fit will be transformed after SCing, its worth it.
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