Rookie question...

When they remap the ecu, is it not the same for all vehicles? If you have an S8, then will your map be identical for every S8 or is it specific for every car?

 

Each car is s little different. They have a base map which "should" be pretty close to the car's air/fuel requirements given prior significant experience with the engine configuration. However, there is always "fine tuning" that must tale place to ensure your car is optimized.

Just fyi, mine is just WAY off right now (partially due to the ECU not learning yet....but why let it "learn" when my dyno graph clearly indicates a non linear curve - this is why the ECU must be reprogrammed). Once its optimized (get the ECU back next week), I'll give it a week to learn.

Hope this anwers your question.

Dragon, any corrected dyno numbers yet my friend?

-Matt

 

Sorry to here that you have problems but it is hardly suprising when your tuner makes changes to your ECU without the ECU being in the car. The tuner can't know how the car will react to changes without real time dyno or road tuning so there must be some guess work and no matter how good the tuner an optimal is not possible.

Good luck.

Some photos would be nice.

 

..........on 11/10/05 you posted a dynograph that showed your car was making 489RWP. You have now posted on 12/2/05 that your Ecu had to go back to Kleemann because your car was making only 411RWHP. I am confused, did your RWHP drop or was the dyno you showed on 11/10/05 mistakenly described as RWHP when it should have been crank HP. No offense intended at all........I have an S7 and I am trying to understand if this is something I should be concerned about. By the way the dyno you posted on 11/10/05 is below.

Ted

 

Matt,
Sorry your having issues with your car

I dont understand why the ECM needs to be recalibrated if the original tune was accurate.

Was your fuel pump bad prior to the tune?

I think i would bite the bullet and drive to Kleeman where they can dyno and tune at the same location. This back and forth stuff will drive you nuts!

Good Luck

 

you lucky peeps with your Kleemann Kompressor

 

Hmm, seems I've confused some people? My bad, ....sorry gang, I'll clarify to all.

1) Yes, the car orginally put down 489 rwhp. However, my check engine light came on the next morning & the car felt more "sluggish".

2) Took the car back to fix the above issues & found out the rising rate fuel regulator had failed so boost had dropped to 3.5 lbs maximum. This was confirmed on the dyno & a boost meter...power had dropped to 411 rwhp due to the 50% lower boost. Even at 50% boost, 411 rwhp is 495 Hp (assumes a 17% drivetrain loss).

3) Fuel regulator was fixed & ECU reprogrammed (optomized further since a total of 27 dyno pulls were now in Kleemann's library allowing them to read not only my ECU parameters for these pulls, but see the associated power output with their changes). Tuning takes time & contrary to John Long's above input, the dyno location was an inconveniece (added an extra 3 days each time the ECU was sent back) but makes absolutely zero difference in how well the ECU is tuned. CT Motorsports has all the MB software & can read & faxed the ECU output data to Kleemann. The associated reprogramming @ Kleemann was "why" the ECU had to be sent to Colorado (they must get downloaded software from Kleemann Denmark - so having the car in Colorado only decreases tune time but, as stated, makes no impact in power output).

Gang, I've just not been in a rush. I've got 3 cars. I figured its better to take my time & make sure this little "semi exotic" is optomized via tuning to refine power output - just not a biggie to me?

The car is back, in perfect shape with about 4k miles & 600 Hp. It HAULS AZZ (tires break lose at 70 mph - did the other night when I destroyed a new pesky Mustang Cobra pacing me on the highway). I'm driving with 100 octane to let the ECU not only learn, but learn 100 octane for maximum power. I'll put on the dyno in mid/late Jan after some more mileage is put on the car to allow learning. Gentlemen, it was worth the wait to work out some minor bugs & tune the car. It is LETHAL fast & absolutely EVIL :v :v .

PS - I guess I'll break down & get a digital camera as it seems people want to see pictures? My Sony is no longer working - software incompatability issue with my PC all of the sudden. POS!!! .

Ted, just watch your MAF sensor. Due to the S7 upgrade, more air is flowing & its not uncommon for the check engine light to come on UNLESS you get one that has an uncharacteristicly high tolerence band (approx 1 in 5 MAF from MB have a wider tolerence to avoid the check engine light from coming on). Mine "ate" 2 before getting a good one. Sound like yours is OK .

Cheers!
-Matt

 

Matt, where are the pics man?

Dinko

 

I was readin a little about the low boost s/c kleemann is developing(out now for the V6 and supposedly soon for the v8). I think i read it runs about .3 bar(4.4psi), so can we infer from your little problem that in the SLK55 the kleemann low pressure runnign 4psi will make 460-480 for a signifigantly reduced price over the .5 bar system and still upgradable to the full .5 bar(7.35psi) kit... Hmmmmm :v

 

...........thanks for taking the time to explain. I am glad your car is back.

Ted

 

I would probably be more interested in the lower boost S/C since the SLK is my daily car.

Dinko

 

Sounds more like the dyno not being calibrated correctly. The car is not putting down 489 rwhp.

 

Matt you have miss read my post. I made no comment about the convenience of the dyno location.

As i said before real time tuning is by far the best, the tuner can make a change and immediately see the effect on the dyno. Kleenman can only guess what impact their changes. This is a well know FACT.

Good luck

 

that was my point and interest above...if the .3 bar s/c can get me well into the 400 range it would make more sense as it is my daily also...

Who has info on kleemanns low pressure s/c for the lsk55?

 

The the dynojet is/was calibrated correctly. Its used & calibrated on a routine basis. In fact, a stock SL65 had put down 505 rwhp right after my 489 rwhp dyno.

As I mentioned, the rising rate fuel regulator had reset to stock parameters thus the ECU would not allow for more than 3.5 lbs of boost because the A/F was getting too lean...thus the lower 411 rwhp#. I've been around boosted cars my whole life - if you don't have adequate boost & the right A/Fs & timing, output is compromised. Getting the car tuned properly solves the problem. Boost is now linear & at 7 lbs. Output has returned to prior levels & is climbing as the ECU adapts.

Ted, any time.

-Matt

 

Just curious so how much more air do you think is flowing on a S8 kit? Reason i ask is because i've never had my check engine light come on other than that annoying ESP light.

 

More air over stock, or S8 over S7 (which would be extremely minor as S8 is just the sport cams)?

I know, I hate that damn ESP light. My car went sideways the other day coming to work when I got on it a bit to merge...dash looked like a Christmas tree.

-Matt

 

Pictures... Videos?

 

Good to know. Yeah that ESP is just too annoying but i guess you can't blame it from trying to tame over 600 ponies!

 

don't go with that bro... its $8,000 ... the regular kompressor is $11,000. save the extra $3,000 and get the real deal. from there on you can play around with it to see how much you want.

post some pictures! i wanna see that gorgeous engine!!!

 

Geezuz, I said I'll go buy a digital camera & post some pics (all to please a bunch of internet strangers to boot...OK, maybe I DO need to upgrade anyway ).

Give me a couple days - maybe a familiy member will buy me one for Xmas & I can save a few hundred smackers . See ya.

-Matt

 

Yes, obviously if those are the prices, the regular is a no brainer.

 

Jam, got a more definitive answer for you according to my Kleemann installer:

"The air flow increase is proportion to the HP increase. Therefore, air flow
volume is increased by 80%. The MAF signal has been modified thru a voltage clamp for ECU to read the correct range. The software in the ECU is
programed to process the fuel delivery accordingly with the revised MAF
signal scale/range along with the increased fuel pressure delivery for
correct fuel mapping."

In a nutshell, the MAF is adjusted according to the Hp increase. If you are not seeing a light, your MAF is operating within its adjusted range to account for your Hp increase.....you are good to go (no Check Engine Light). See ya.

-Matt

 

Matt,

That's good to hear! Now how do we get rid of that annoying christmas light ESP? I mean i know it's christmas and all but what happens after christmas is over? lol :p Also what's your current rwhp now?

 

Har har!

Output was 489 rwhp prior to having to replace the rising rate fuel regulator. Thats been replaced & power "feels" like its back according to the butt dyno (which trumps all objective measurements). Its likely 489 & climbing a bit as the ECU learns (just took me a month to fix that stupid regulator/check engine light error). I'll dyno next month for grins & post.

Merry Christmas!

-Matt