E55Pilot

Which tuners do we use?

Renntech
Kleeman

Who else?

Is LET legit?

bobgodd

Add in VRP and I think that's about all of them.

E55Pilot

VRP is powerchips

bobgodd

I still didn't see either on your list...

Anywho, VRP is in your neck of the woods and I could be wrong but I think they do custom dyno tuning, so that would count.

And for the record: until proven otherwise, LET is legit, with many satisfied customers.

bassn_07

I'm extremely happy with VRP's tune. Vadim's customer service is top notch and that's what keeps me coming back. Definitely add him to that list.

hooleyboy

IMO Weather you go Kleemann, Renntech, LET or what not, Just get a dialed in dyno tune. knowing what I know now, You will leave something on the table if you have mods and just get a mail tune or basic flash. DO IT ON A DYNO!

bassn_07

Even though it's Powerchips doesn't VRP contribute to the setting and parameters that make it their tune?

bassn_07

How about data logging at the track with a A/F ratio sensor, wouldn't that be most ideal?

E55Pilot

That's a given.

neveo

I'm very happy with both my VRP tune and with Vadim. Previously i had tune from EuroElites as with others on this forum.

E55Pilot

Nope a dyno is better because it's back to back and conditions are factored out.


I spent 5 hours yesterday dialing in a race LS1 on a dyno and I wouldn't do it any other way

hooleyboy

Sure is some cases, But the safest place is on a dyno. its a controlled environment. You can watch the dyno screen the whole time while monitoring important data, thus shutting it down on the spot. On a track you have to watch the road at some point and could run the chance of missing some important data.

Some cars blow smoke out the tail pipes that would be harder to see on a track. Dont get me wrong data logging is nice when you have something that is working. I wouldn't do it for an initial custom tune. Get it done on a dyno its just safer IMO.

When it come to testing anything doing it a controlled environment is the way to go.

aleksandar1099

Go with LET, hands down...

bassn_07

Wouldn't the actual load on the vehicle be a much better and accurate way to dyno versus simulating a load? I have really no idea, I'm just trying to learn and figure out what's going to best for me when the time comes.

hooleyboy

LET is Legit, Lots of very happy members.

E55Pilot

That load is always the same. There is no aero to deal with (And this is an Aero Car) the air is going to be the same, I can listen to the car, smell it, see if it's smoking.

Dyno Hands down for tuning, Engine stand if possible then installed

jangy

Powerchip is independent and happen to have worked with the E55ks for many years. Of late (last year or so), they have been working more closely with Vadim and he has taken the tune to new levels while maintaining the driveability. I would put the Vadim (note: not VRP) over ANYONE's out right now. He was the first to address the TQ management and all the others are either catching up or finding workarounds for their current tunes.

The key for me is where the baseline is on the tune that you are after? Vadim's baseline is from an '06 E55k with ALL of the MB flashes. There are absolutely NO CEL lights that happen to poop here and there like many other tuners (secondary injector, etc.).

As far as LET, IMO they have legitimized and do have many happy clients. Adding Wayne was a huge factor.

jangy

Before you start cracking down on me for using "happy hands" vs 10 and 2, could we discuss the data?


1 - When you dyno tune, is it WOT only or do some go through the gears as in normal driving?

2 - I'm a little confused why you do not accept datalogger and A/F sensor data as well.

Here is why I ask. When we first started on my car, each revision was dyno tuned and tested. Then, we would drive it for a few weeks, collecting data etc. to make adjustments. Most of it had to do with driveability and shift points, but we did make quite a few changes based on datalogged data vs the dyno. Now, in hindsight, it seems that we even missed a few mid-throttle spots so there is even more to "update".

Thanks

2root4u

Another satisfied customer of LET here. I got a mail order first then an in-person tune. I highly recommend just going for the gold and flying LET out for a custom tune (or using their remote tuning setup). See my thread a few months back for my dyno sheet showing power they got above the mail order tune. I also enjoyed an 11.59 @ 121 on street tires at the last MIR event with my few mods.

Strafe1

Kleeman is great as well. My personal experience, of course.

MJ50

i'm prolly the few that uses SI tune but i'm happy with it...

Bisco

What other mods do you have?

jangy

I would guess a pulley, tune, and maybe cooling with that et at MIR.

Addicted2Speed

Does anyone know how VRP's powerchip tune differs from Evosport's powerchip tune?

MB_Forever

I know not a lot of people like to use them or even mention them because they're so freakin expensive, but they do provide decent tunes: MKB and Brabus

Okay, so here's an updated list of the major players (in random order)

- RennTech
- Kleemann
- MKB
- Brabus

I'm personally a big fan of RennTech from personal experience on a couple of cars.