I like the idea of a custom tune.
Perhaps something could be set up around some of the larger GTG's.

 

i believe that to be incorrect. we have been workign with james at inmotion for a while now tweakign tunes due to the prototype parts we have been making while sending tons of datalogs back and forth and he has been great and able to make all the changes we have asked for (custom tune = custom tune).

if you want to say your tunes are cool i dont see any problem with that, nor do i think anyone else would unless it was proven wrong. But to incorrectly say a competitor is snagging someone elses work in order to promote your stuff isn't right.

btw, we don't (nor ever have) make a dime off of any inmotion sales.

 

Jerry is not purposely trying to misconstrue the situation, he was merely stating that based on our prior experience, most tuners use some type of file service...there is nothing wrong with this if you don't have the time to invest or the knowledge to bring your customers quality ECU programming

thanks for setting the record straight, we are not in the business of stealing anyone's business, there is plenty out there for everyone, i know we are busy non-stop...

 

How else could someone with no garage and no dyno have "tunes" for every singe car on the road?

With that being said - I called / emailed a lot of companies offering tunes and James at Inmotion was one of the very few who was not a BS salesman - and was more then willing to modify his base tune to adjust for altitude, driving habits, etc.. but that required a lot of data logging and shipping.

I decided to go with someone who had a lot of experience with the 3.2L AMG motor - and luckily - his shop was only 30 minutes down the highway...

It's good to see more and more experienced tuners available for the Crossfire. Plenty more options to choose from.....

 

I have the exact same tune as Rob@needswings. I was planning to run a 25-35shot of N20, so I figured it would be a good start since Robs manifolds increased airflow and showed a 35whp gain. I have yet to install my wideband, nitrous or do any datalogging. Too many other things to worry about right now. Since LET deals specifically with these motors, I thought their tune might be better, so I asked if anyone had it. I guess there really is no way to tell without a back to back dyno comparison on the same car. Rob has shown good results with his tune from Inmotion, so I think I'll just stick with his tune since I already spent the money . I am actually thinking of not running the nitrous and picking up a set of Robs manifolds when released. The car runs good with the Inmotion tune now, but it is probally running a little rich without the extra air from the N20 or intake manifolds. If I can get it to the 11's without having to fill up a bottle I will be happy.

 

Would you be willing to drive to Houston for a custom tune on the dyno?

 

Jerry,
would my narrowband O2sensor show around 0,1V when I'm too lean at WOT e.g at HighSpeed in 4.or 5.Gear and around 0,8-0,9V if I'm rich? Can I at least exclude all possibility of doubt that I'm running too lean at WOT if it shows 0,8-0,9V?

Thanks.

 

Yes, a reading of .2 V would represent a lean mixture. A reading of .8 would be a rich mixture.

The perfect stoichiometric point would be around .45 V - .50 V at WOT.

The ECU only see's lean or rich ad does not register specific values from the O2 sensors.

 

Thank you very much!

 

Same here, and im planning on it when it cools off.

 

I would, but like I said I already paid for the tune from Inmotion before I even new about the Jerry Tune on Mbworld. Rob has had good results with his tune from inmotion, now I just need to pick up his intake manifolds when they are released. I know a custom dyno tune would probally yield better results in the end, but economically it would not make sense for me to go that route, unless the gains were quite substantial.

 

My issue is I don't want to install a bunch of gauges just to tune the car. I have the same mods as a lot of guys. Code 3 pulley and Needswings intake. Can LET just replicate a tune from a similar modded car that provided the parameters for A/F and data?

 

That's a great question. My concern is even more detailed, would a "winter tune" cooler temps dyno session change A/F when summer rolled around? Possibly even entering danger zones? Or would the ecu recognize the extreme conditions and compensate?

Only for this reason was I thinking of the inmotion tune with 3 different chips stock, summer, and winter. I may be the only one who races in 100+ degree weather in the summer.

Thanks for a great discussion.

 

And you don't have to! Tell Jerry what mods you are running on the car and im sure he can tune it for you. That is what I did when I sent mine out to him. He had an existing tune specifically for my mods that he had over 100 hours of work in on! I would recommend you get it on the dyno before and after just to be on the safe side.

 

The ECU has sufficient dynamic range to adjust for atmospherics. Octane requirement decreases in the winter.

LET is beta-testing our TwinTune setup right now. We have a switch to toggle between two setups, be it nitrous, race fuel, or valet.

As others have pointed out, LET develops our tunes in-house, on the dyno. As far as we know, LET is the only shop able to do true custom tuning, not involving an overseas file service.

 

Thank you for the answers. Nice tip on the octane requirement. So would that be the opposite in the summer, to use a higher race fuel octane?

So it is possible to have a custom tune for different setups? Is that by replacing the chips as well?

Do you guys work with any of the tuners in Scottsdale? Lot's of high hp MB guys there.

Thanks again for the help.

 

Twin tune would be great! simple flip of a switch and your running your race fuel tune

 

I just got the ECU back from LET a couple of hours ago. Boy does it feel good in there. Pulling VERY strong and really gets up and moves out. Crusing at 70 on cruise control and it just feels like it want to take off and go. I cant wait to get it back to the track and the dyno. I'll post the numbers when I get them. Then you can see the before and after data.

MikeR

 

Remember, the hotter the fuel, the more octane required.

Yes, our new flip chip will allow you to have two different tunes, available via a switch. Turn the car off, flip the switch, then you will be running the "other" tune the next you start the car.

We are in the process of setting up a partnership with a company in AZ. I'll have more info later.

 

Very nice. Most of the mb guys are on http://www.scottsdaleexoticcarclub.com/forum/, wild SLR comes out to play when they rent they rent the track. Also some 10 sec biturbo's.