Speaking of which, this may be a dumb question. I believe it's the scanalyzer or another similar product that give you your estimated HP. How do these products accomplish this? I was wondering if the Cobb can do the same, that is if Cobb rights software for it (not sure how complicated).

 

Just flash and go.
However, the various calibrations wot change your power much.
Read the thread. They are just different in the way the MAF is calibrated.
I would have to provide you with different tunes after you have the bas calibration set correctly.
Wait for that until you bother to dyno it.

The AccessPORT has a performance meter.
I haven't tried it.

 

Someone with the AP should try the built-in performance meter to see if you get repeatable results.

 

i probably will today when i leave.

 

see if it has any features to record acceleration over time. e.g. try like 5mph to redline acceleration in 2nd gear to gauge. COBB says they are working on a virtual dyno feature.

 

I don't think it's that hard to implement this. Just a few calculations for loaded pulls in 2nd or 3rd gear to redline should be able to give an approximate hp rating.

Some of the factors it will need are atmospheric conditions, size of frontal area of RX-8 to calculate drag, gear ratios, final drive ratio, surface incline. In a nutshell, generally to calculate load.

I have scan tool/logger called Auto Enginuity and it has a module called Speedtracer that does it this way.

 

i have a spreadsheet that does this... does sae weather corrections, accounts for drag based on the cod and estimated frontal area, also adds back in the power to drive the front wheels and rotors to simulate a chassis dyno... its not hard, just entry level kinetic energy physics equations

the problem is the speed or rpm signal has noise in it, which gets amplified when you integrate with it ,and then gets amplified again with each additional correction. You can do some best fit line calcs, but its best to suppliment with a gps or accelerometer to accurately get the noise out.

 

Sounds like it would be easier to use a GPS device that can accurately tell you how long it took you to go 1/4 mile and the speed you reached the distance at, then just use the weight, mph, and time to estimate your HP.
Of course there are tons of factors like temp, elevation... But it will be close enough

 

or you could just.... dyno your car

 

i tried the performance meter and got a 0-60 of 5.7 secs with a decent launch....like a month ago

 

OOh la la! That would be too easy...

 

I flashed the "MM 2005 MT TURBO v1_0" map and after many drive cycles my LTFT was +5 so I flashed the "MM 2005 MT TURBO v1_2a" and now my LTFT is +2.

Should I flash "MM 2005 MT TURBO v1_3a" to try and get my LTFT closer to zero or will that flash get me into the negative fuel trims?

 

The AP just said my 0-60 time is 2.3 mustang GT's. I don't know what that means. Damn beta software.

 

grand am / koni challange?

pm coming if you hot pm BOX is not full..

and really i would just help, and not say a word..


beers

 

did the firmware upgrade without a hitch...

I can not believe how much of a gas hog 1st and 2nd gears are. Doing like 20mph i was getting 5mpg in 1st gear, 10mpg in 2nd, like 20 mpg in 3rd, and like 30mpg in 4th gear... yeeesh

 

its because you aren't traveling very fast.

 

My avg MPG was reading 17.7-18.5, thats way better than what I calculated by using a full tank of gas and my trip meter a while back. It was 14.7-15.2 even with 1/4 of the driving on the highway. I wonder how much of that improvement is becasue of the Mazsport ignition?

Jeff I sent you a reply mail for the confirmation of the Firm ware update and I included a data log with your 1_2a, I did a first gear pull to 9000 from 5 mph and a couple of 2nd gear pulls as well.

I wanted to log more info but the area I wanted to use was occupied, there was a dead motorcyle rider being tended to by a bunch of cops and ambulances.

mysql, that makes me not trust the 0-60 calculator on there anymore, but if its right... Beware Bugatti's mysql is on the road!

 

Jeff,

While working with the AP I discovered an important field that had not yet been made active. It's one of those features common in stand alone ECU's or the Interceptor-X and is an important tool for tuning. It will further enhance the AP's ability's once the power levels start to increase.

I need to get you a link to update your version of the tuner software so you can help MYSQL and some of the other guys.

Please give me a call at the shop a.s.a.p. @ 1-800-538-9989

BTW, Big thanks to Trey @ Cobb who was kind enough to drop everything he was doing and figure it out. Again big thanks there Trey, although the community doesn't know it yet, they will appreciate it.

 

lol.
When Christian asked me if I wanted that feature, I told him no because I did not think there were any applications for it, particularly.
The OE coils don't need dwell modifications and neither do the coils I've experimented with.
I assumed the MazSport ignitor had an adustable dwell.

 

He just found it two days ago after I asked him to look for it. Have you looked at the new software yet?
Mazda changes the dwell quite a bit, it's a very useful function when tuning.

 

It's good to see Scott provide his input to this thread.

 

I am always happy to see intelligent people chime in and add to the community knowledge pool. Even you Ray! =)

 

Actually, he asked me about it 3 weeks go.
Its only useful if you have coils that are, effectively, pulling timing as the RPMs increase because of excessive dwell time.
Since the coil sets I've been playing with don't do that, I decided that it was more important to me to have the other features I needed implemented at that time (A/T support and a few other things I can't talk about yet).

 

May be off here but does this theoretically mean if you have Mazsports ignition mod that there is more optimizing that can be done with the Cobb -- assuming you supported that?

 

Oh... interesting. Scott?