Can someone explain the advantage of a CMR tune - SRT Forums

Adionik · 10-16-2009, 05:51 PM

What parameters are you able to adjust over a handheld that benefit us?

Just curious how much more you can get out of a CMR tune. I like to think i've nailed my tune pretty damn well, and I hear it can only get better with a CMR tune. But why specifically?

rasp · 10-16-2009, 06:05 PM

Simply because the CMR tune has more adjustable parameters to get more power out of your car. The handheld only offers a selected amount of parameters you can change as opposed to the CMR software that has a significantly more amount of tunable parameters.

For example: injector scaling, VE tables, part throttle timing tables, knock sensitivity adjustment, torque management levels, and many, many more. They all help in achieving maximum horsepower out of your car.

93stang434 · 10-16-2009, 07:41 PM

What he said^^^^Plus the CMR has better resolution to tune the Fuel and timing,Its in smaller cells like 300-400 rpm instead of every 1k.

Adionik · 10-16-2009, 08:49 PM

Werd, i'm quite aware there is not much to play with on the handheld.

Just wanted a bit more specifics on the CMR tuning. Obviously they have a shitload more control than we...but just wanted to get a better idea of what we pay for.

rasp · 10-16-2009, 08:56 PM

You pay for the time and knowledge to get your car running at optimal levels. This is why finding a person experienced in the SRT-4 is critical. Despite what some may say, people who can tune are not universal tuners. Make sure you find someone who knows these cars and their mechanics and not someone who's just learning as he goes with your car on the dyno because he's use to tuning only Mustangs.

jeffcv33 · 10-17-2009, 10:56 AM

I'm gonna be honest with you, if you think you have the handheld tune nailed, you're living in the dark. Haha. Seriously though, first time I had John at PTP tune my car with the CMR software I picked up almost 10mph and a second off my ET. And the software has thousands of tables. They can pretty much achieve anything with it. Its WAY worth it. I honestly wouldnt run a DSP without a custom CMR tune.

SRTrent · 10-17-2009, 01:13 PM

damn^ i think i'll be needing a custom tune then =)

Adionik · 10-17-2009, 02:16 PM

Quote: Originally Posted by jeffcv33

I'm gonna be honest with you, if you think you have the handheld tune nailed, you're living in the dark. Haha. Seriously though, first time I had John at PTP tune my car with the CMR software I picked up almost 10mph and a second off my ET. And the software has thousands of tables. They can pretty much achieve anything with it. Its WAY worth it. I honestly wouldnt run a DSP without a custom CMR tune.

So, for conversations sake, let's discuss my specific car and it's uses.

99.9% of everything I do is straight line roll racing. My tune is set for a 12.0 spool, and 11.8 AFR band. I let the PCM do whatever it wants with timing, which usually ends up in the 30* area.

Now this is really the only time I ever get on the car, other than that a grandma could pass me daily driving. What more could be done to increase power? I figured for that specific situation, a custom tune would not differ much from a handheld...because not a whole lot is going on.

jeffcv33 · 10-17-2009, 03:21 PM

Call John at PTP. There's alot of shit to improve on. I will let someone else explain more in detail

srt4moster · 10-17-2009, 03:29 PM

Quote: Originally Posted by Adionik

So, for conversations sake, let's discuss my specific car and it's uses.

99.9% of everything I do is straight line roll racing. My tune is set for a 12.0 spool, and 11.8 AFR band. I let the PCM do whatever it wants with timing, which usually ends up in the 30* area.

Now this is really the only time I ever get on the car, other than that a grandma could pass me daily driving. What more could be done to increase power? I figured for that specific situation, a custom tune would not differ much from a handheld...because not a whole lot is going on.

what mods do you have on the car?

Adionik · 10-17-2009, 03:49 PM

Fully built motor, ext wga and every bolt on

rasp · 10-17-2009, 04:31 PM

Quote: Originally Posted by Adionik

Fully built motor, ext wga and every bolt on

And for all that you want to simply rely on the handheld? Okay...

SRTrent · 10-17-2009, 04:32 PM

Adionik how old are you?

Adionik · 10-17-2009, 05:16 PM

Quote: Originally Posted by rasp

And for all that you want to simply rely on the handheld? Okay...

Did you not ready my previous post? Like I said, I'm not knocking the CMR at all, I just like to know what i'm paying for. God knows there ain't shit much to control with the DSP.

I guess it would be a little more beneficial for an actual CMR tuner to maybe jump in this thread and explain it a little better. PTP or someone. I've just never really had it explained to me to my satisfaction. I don't like "JUST GET CMR TUNED" as an answer to why it's better. Ya know? I guess there is enough business to not need to explain why a custom tune is better, you'd otherwise think the tuners would be having a sales pitch of some sort as to why it's superior. Atleast that's what I would do...

Quote:

Adionik how old are you?

20

rasp · 10-17-2009, 06:19 PM

I read all your posts, and your mentality is flawed. This was simply a ridiculous thread since clearly your mind is already made up. Tuning from the handheld alone is a step above tuning with the SAFC. Yes, it works, and works well, but with the capabilities of the DSP, you should really be utilizing all of its features if you have a modded vehicles (and clearly you do).

I'm not really sure what you need explained. You have a shit-ton more parameters that your car can take advantage of with a CMR tune as opposed to the handheld alone (only a few I mentioned). You will see an increase in drivability comfort, powerband consistency, throttle response, etc. with a CMR tune.

Any CMR tuner on here will tell you the same thing - a CMR tune supersedes the handheld tune any day of the week. Even if you look at some of the Charger/Challenger/Jeep DSP threads you'll find some great pre and post dynos with the tunes.