mjd222

i have two problems
1-i just got my car tune by pp performance
after the tune 4-5 days the car is lossing power and coming back to stock power
i checked the car no problem did this happen to any one before

2- one problem 2 year ago very one or two week the engine viberts like hell and when i turn the engine off and back on it dispir i don't know what is it
and it is sill there

mjd222

:-((

kponti

What year car? Who is "PeePee" performance cos it almost sounds like you are punking us

EDIT: Its clear my "humor" did not come through on this so let me add. Sure I did not know who PP performance were, but I did assume they were real but from somewhere outside of the US.

mjd222

here is the web site
http://www.pp-performance.de

gaspam

they have been around for a while in germany and UAE and have a few 63's in low 10's with ~140mph trap speeds... you see a lot from them on boost addict

heres their e63 4matic going 10.13

joseyu

One question I have with these tunes from Germany is if they do anything specific to account for the US 91/93 octane gasoline. They generally have better gasoline there, so we could run into problems here if the tune does not account for the slightly lower octane gas.

Zod

get your spark plugs checked by dealer, or get the new ones they issued

gaspam

the measurement unit used for gas octane is not the same there as here... they post the numbers in a different unit

US and Europe calculate it in different ways which makes US fuel look like it has a lower rating but in reality they've got the same rating. US shows the average of the Research Octane Number (RON) and Motor Octane Number (MON) rating, which is the Anti-Knock Index (AKI) also known as (R+M)/2, while Europe just shows the RON rating which gives a higher number than the MON rating.

super in usa is 93 (R+M)/2.... in germany its 98 RON.... same octane just different measurement method... kinda like measuring gal here vs liters there... 1 gal does not equal 1 Liter, just like 1 (R+M)/2 (usa measurement of octane) does not equal 1 RON (european measurement of octane)

joseyu

I am well aware of the difference in the way gasoline is rated in the US vs Europe. If the Germans tune their cars to 98 RON, which is 93 AKI, how do they sell their tunes to people in states like California, who only have 91 AKI or 95 RON. Better yet, 100 RON (95 AKI) is widely available in Germany and it wouldn't surprise me that some tuners there will tune their cars to this grade of gasoline for more perfornamce. Do they sell the same tunes here? For smaller tuners in Germany, is this fact overlooked when they try to sell the same tune to cars in the US?

gaspam

they do it the same way ams, weistec and renntech do it here, they give you a tune either for 93 or 91 depending on where you are and what you tell them you use... I have never heard of a tuner that sends a customer a tune without asking what octane they are running

joseyu

Thanks. Now I am wondering where the OP is based and if PP asked for his octance preference.

kponti

And I have never heard of a tuner asking what octane rating to tune your car to. Also most modern ECUs will automatically adjust to whatever octane you put in the car. That is why with no changes just adding 5 gallons of 110 octane to my almost half full tank and running it about 4 mins on the dyno, I picked up 20rwhp.

gaspam

Then you haven't been in the tuning world very long ( which sounds about right since you never heard of PP performance ), because most of the tuners for Audi VW Porsche BMW and the JDM guys have selectable files based on what octane you're running ... In my Audi B5 S4 it has 4 selectable tune files based upon octane (go to apr site and see all the selectable Tuesday offer for Audi Volkswagen and Porsche )

And yes modern ECUs will compensate but not by adding a bunch of power.....they compensate for lower octane by pulling timing thus reducing your power

Now if you put a higher octane in there such as race fuel you may pick up some power that you otherwise werent getting because your knock sensors were telling your car to pull timing on your regular file , but then when you put in a higher octane you got slightly less detonation / knock and so your ECU pulled less timing( does she picked up a little power that you were previously losing) but it's certainly not adding timing beyond what your car was already tuned for on regular gas

kponti

Lol I guess personally tuning standalones, rewritable Eeprom chips and piggybacks since the late 90s is rather recent.

I was referring to the E63 tuners you yourself referenced

kponti

-The vibration/shaking that goes away after a restart is because your car goes into limp mode. Seems you are misfiring quite a bit. Might want to check out the state of your spark plugs.
-You might want to check with PPP as well to see if they have some more info for you since you just got the tune

What year is your car? How many miles on it? Are you on factory plugs?

gaspam

Aren't you the guy that started a different thread because can't figure out why your dyno numbers came in low? Maybe you should've told renntech your octane, because when I got my tune from them they had me fill out a sheet and one of the questions was octane running

You're also the guy that thought PP performance was somebody's idea of Punkin you

Carry on lol

Speedriven1

This. On that sweet, sweet European Shell VPower all our cars are faster.

Speedriven1

I wrote that sheet back when I worked for Hartmut- glad it was helpful!

kponti

Yep same guy! And if you have not noticed, ALL the current flock of MB tuners operate under a code of secrecy. No one has any idea exactly what they are modifying in their tunes except that they ask for more boost.
Renntech's response was, "we gave you our best tune, check with dealer if you aren't getting the power you should have"
AMS did not ask for a octane when I was considering going with them (changed my mind cos my car is CPO and my dealer did the Renntech for me). Renntech told me they have the same tune regardless of 91 vs 93 octane (I have 93 octane here, the difference is simply 1 or 2 degrees of timing anyway on the top end if I had to guess)

Oh I was not asking for why I was not making power, I was showing the power delta in my case with Renntech. I did have some misfire though after the tune and it was a concern to me.

gaspam

Yes sir sure was! I guess some other people on this thread didn't get the same sheet from renntech though

mjd222

yes i have the stock plugs
PPP told me to use HKS plugs

one more Q i have O2 sensor filer
does the O2 effect the performance of the car

kponti

O2 filer is like the fouler? That should not affect your power output if it was only done on the secondary sensors. Might not work and you might still get a catalytic code if it's not working right. But shouldn't affect output or cause misfire

mjd222

i meant
i have code O2 sensor failures i clear it but after 1 or 2 days it came back
so if the O2 sensor isn't working does it effect the engine performance???

Lenin

The function of the O2 sensor is to communicate with the ECU Lean, Rich or Stoich fuel mixture condition. If have a problem with the O2 sensor, the ECU is flying without the AFR info. Not the end of the world if you are monitoring your AFRs some other way.

gaspam

it will affect fuel economy by preventing your ecu from going into closed loop function... When no signal is received from the O2 sensor your car will stay in open loop and run off programmed maps (it already does this during start up when car is cold and WOT).... these maps are static so they are not adjusting like your car would be in closed loop function using o2 info, thus less fuel efficient (running rich)