Linkie.
GTI:
http://www.automobilemag.com/feature...dyno_chart.jpg
Si:http://forums.clubsi.com/images/graemlins/headbang.gif
http://www.automobilemag.com/feature...dyno_chart.jpg
MS3:
http://www.automobilemag.com/feature...dyno_chart.jpg
S.
Printable View
Huh... the power and torque both drop off dramatically in the MS3 after about 5750rpm. I wonder why?
Srivendel, do you notice the same thing? I know that's one of the reasons that I hate DBW throttles - they are non-linear and often less responsive than good old fashioned throttle cables. I know I'd prefer a good old cable in the RX-8 to the twitchy and somewhat artificial DBW throttle.Quote:
And arguments about turbo lag here are moot; the Civic Si's drive-by-wire throttle is so slow to respond that you can literally press the throttle to the floor and release it without any response.
The DBW is one of the things that steered me away from the Si. Manual tranny with an semi-auto throttle? Huh.
Although I wouldn't mind the LSD.
I like the look of the Si dyno. Go, go gadget VTEC spike.
Little disappointed in the HP number for the MS3. Isn't Mazda advertising 268HP? FWD drivetrain loss should be less than 20%. Have they not learned???
I don't notice any lag. In fact, after reading this I tried blipping the throttle at 70 mph to see if I could reproduce the effect they complain of. Nope. I floored the throttle for a split second then let off. The engine simultaneously started to surge and immediately dropped off, just like you would expect with a regular throttle. The writer of this story is either (a) lying or (b) driving a car with different software programming than mine.
The DBW throttle isn't perfect. There's a notorious "rev hang" issue with the new Sis, but again, I only notice the effect very slightly if at all.
Honda has released a series of software reflashes to fix the problems (this should be familiar to any RX-8 owner), and my late-build 2006 car has all of them from the factory. I love the responsiveness of the car, and have never had any issues. Your results may vary.
S.
Dunno, but the Si loses less than 10% of its rated HP at the wheels. The MS3's parasitic losses seem suspect.Quote:
Originally Posted by miataspeedracer
S.
Is the dip in the middle of the SI the Vtec? Why does it dip like that?
So that the subsequent hit is all the sweeter. ;)Quote:
Originally Posted by Majik
S.
sequential turbo cars, take the magnificient FD for example ;), demonstrate the same thing as the second turbo comes online.
You think that's a hit? Try when the primary turbo is only making partial boost... but still fully pre-spooling the secondary. :burnrubr:Quote:
Originally Posted by RX7-2nr
(former FD owner)
awwww dont get me started on the FDs. i could scrap my plans of getting a Miata and get an FD much cheaper. id love it soooooooo much. that car is at the top of my list of cars i could afford. i need a daily driver though. ::Rant:: i put alot of miles on my car. im afraid id kill i too quick.
There are different levels of affordability. Don't ever confuse the low price tag of an FD with a low ownership cost. Mine ended up costing me over $2 per mile in maintenance and repair costs over the time I owned it. To paraphrase the old line about Porsches, "I could give you an FD, and you still couldn't afford it." :wink:
WowQuote:
Originally Posted by altiain
That's almost like the upgradability cost of an RSX. You can make more power just pe prepared to pay dearly for every HP you get. :D
Quote:
Originally Posted by altiain
No. no. no, try having a sticky bypass valve on an MP62.
You can go from 3 vac. to 8 boost in the blink of an eye. And at something like 4500 rpm that will get you attention. lol:burnrubr:
Of course a normal SC Miata doesn't have any spikes or dips, just instant on/off power. No fall off at the high revs. Just makes you smile.:D
Sometimes I think it would be fun to be able to control the Bypass via a steering wheel mounted button.Quote:
Originally Posted by scmx5driver
http://favoritetoons.com/speed-racer-6.jpgQuote:
Originally Posted by Titus
Quote:
Originally Posted by Titus
Could be fun. Or you could just hook up a Nitrous tank.
I think the nitrous like on/off would be nice a lot of the time on the street, but I can't imagine trying to use Nitrous on the track or autocross. I'm visualizing a 3 position switch under the dash...Quote:
Originally Posted by scmx5driver
Position 1: Allows bypass to operate as it normally does.
Position 2: Causes the bypass to always see vacuum, keeping it in bypass all the time. Great for Valet mode.
Position 3: Switches circuit to momentary push button on the dash. Normal condition is vacuum (position 2), but push the button and the vacuum shuts off, slamming the bypass closed and throwing you into boost.
Boo2::Censor:: LOL ill have to wait until i get rich and take over the world.Quote:
Originally Posted by altiain
Your pic isnt working.Quote:
Originally Posted by POS Racing
Ofcourse you cant use it at an autoX, and I am sure almost every track event out there also bans it.Quote:
Originally Posted by Titus
that would be a GREAT feature if they could find a way to do it. itd have to control more than just the bypass- itd have to control the fuel map and timing as well. itd be pretty handy to just tool around town all day on the low boost setting, then have the high settings for track and strip use. i dont see why they couldnt.Quote:
Originally Posted by Titus