Looking for videos to compare acceleration in 2nd gear (2k-9krpms) for the S1 Rx-8
Please list:
- mods
- any possible issue wrong with the car
- guesstimated weight (people/cargo)
- road conditions (up-hill/flat/downhill)
- DSC (on/off)
- any other info you can provide

Here is mine...
- Stock
- Possible Bad Cat (rattles) / Two Coils (1 & 4) tested out of Spec according to Mazda (no CEL)
- 280lbs
- Slight up-hill
- On
- Temp 70*f, 93 octane Premixed (1oz to 3 gal), Compression tested, within Mazda's specs.

http://www.youtube.com/watch?v=ZCYnsh-WaPc

Looks like about 8.5secs to get from 2k-9krpms to me...
I'll try to get one on a flat road when I can.
Anyone else care to share?
-Shawn

 

idk man but in my opinion you shouldnt be in 2nd gear yet. why try to pull from 2k in 2nd? whats wrong with first? if you want to accelerate faster dont shift out of first so quick. its tough for me to tell cause my car is still hibernating for winter, which sux.i miss it.

 

My normal shift point is about 4-5k, this is just me being my "special-self" trying to gather some info for my mind that never stops thinking....

 

ok. i was gonna start taking my car out and getting it ready for summer this past weekend but im glad i didnt cause we got over a foot of snow this week. if spring ever gets here ill check it out for ya but honestly it will be hard to do. i miss the 9k redline.

 

You sir, have a good taste in music! I'll try and snap on here soonish.

 

What is the information you're trying to gather by having the users perform this test? And you really should note that this should be performed in a safe environment etc as you are asking fellow forum members to possibly break the law.

 

If enough people respond there are several things you could compare, mainly mods and which/when they, help the most (upper/lower rpm range). I know a dyno would be best, but not everyone (including myself) know where to go / wants to pay, to use one. I know there is a lot more to take into consideration, but the list above would be good enough for me.

I figured people who would actually respond with a video would have enough sense to use good judgment on where/when to perform it. But I guess you never know...



Here is another one,
2.2k-9krpms (about 8secs)
- Stock
- Possible Bad Cat (rattles) / Two Coils (1 & 4) tested out of Spec according to Mazda (no CEL)
- 280lbs
- Near flat
- On
- Temp 77*f
http://www.youtube.com/watch?v=2yzx5is_vqM


-Shawn

 

Doesn't the power band in 1st gear drop off quite heavily after about 4K?

 

Not mine?

 

Maybe im smoking something (or thinking of when i had my civic lolz)

 

my car is pretty modded. im not fi, cobb, or bhr ing but pretty much everything else. if this picks up after i do my springtime stuff to my car ill try to post a vid

 

its been a few months since i drove it but my car pulls hard to redline

 

not quite what you were after but .....


http://www.youtube.com/watch?v=K7NMIKfdBaw

http://www.youtube.com/watch?v=NzlvSC_8N-Y

 

From my datalogs, 7.71 seconds from 1984rpm to 8450rpm.
BHR ignition, ebay catback, cobb ap.
Base 2005 with 3/4 tank, 240lbs of me and a 10" sub.

My most recent log was 7.2 from 3069-8998rpm. IME, unless you bounce off the fuel cut a couple times, you didn't actually quite hit redline.

I will do a video, time permitting.

 

just for a reference S2's 2nd gear pull.
stock, 42F
I say its about 7.2 sec from 2200 to 9200.
S2's have shorter 1st to 5th gear.
http://www.youtube.com/watch?v=UzXNnAr65h4

 

At least in S1s, the tachometer reads 500rpm high near redline.
It appears to be the same in S2s, so that was ~8700rpm.

 

idk how you come up with that conclusion.
by calculating the rpm and speed relationship, 15mph at 2250rpm, that gives me 60mph at 9000rpm which is exactly where the tachometer is at 60mph.

I did the same for OP's vid. he had 2500rpm at 18mph and 9000rpm at 65mph, which is exactly the same ratio.

 

Man that gearing really seems to help out.

 

There is a 500 rpm difference when you compare tach to datalog, not car to car.

 

but this doesnt make sense.
if it was 500rpm higher at red line, then my calculation would show the difference, but there was no difference.
by looking at the video, 15mph at 2250rpm, that gives me 60mph at 9000rpm, which is exactly what the video showing.

 

The tachometer on the RX8 reads constistantly 500 rpm high over an AP datalog. It's not something that progressively gets worse up to the 500 rpm it is always just wrong.

 

if i redline my car in 2nd to the point of rev limiter or just before, my tach (i know it may not be accurate) is at 9400-9500rpm and the speedo reads 69mph. idk if this helps any or makes it worse.

 

So in your example 200 mph your tach read 9500 rpm and an AP datalog would read 9000 rpm. It's just the way it is. So if you have access to log the data, via an AP or otherwise, it will be more accurate to the "measurement" being performed here; however, you have to keep the difference in mind when comparing them.

 

It's not 500rpm out at idle but it's 500 rpm out at 9000 so it does get progressively worse as rpms climb . At say 5000rpm it might only be 250rpm out .

 

I thought I had read somewhere in the MazdaManiac Base Calibration thread that it was just always off from idle as I was researching. Can't say I really cared to verify it out though.