Hey guys, so I just got my new tune from EC after adding headers and a heat exchanger with my 83mm pulley. I sent my files into EC telling them my mods, gas type, location etc and they sent me my new file back. Jerry said he set my AFR to 11.7 which from I what I read is right. Well after reflashing it my car started to smell like a lot of gas from the outside not inside. My mpg also dropped significantly. My friend with the same mods as me without a new tune is averaging 16mpg on streets and i can barely crack 11 driving normal. What should I do? Also how do I datalog on euro flash v2 if anyone can help?
Thanks

 

how are your O2 sensors?
do you have any codes?

11.7 is pretty safe - IMHO

 

usually when I smell a lot of gas - and if you have secondary cats still in place - usually needs a good run to burn off any collected crap on the converters

 

02 sensors are good, only code is a CEL and battery light nothing else

 

Now I need to go out tonight and have some quick freeway pulls

 

what is the code for the CEL?

 

whats your cel code?

 

Haven't ran it yet will do today

 

You can't know you are running rich without a wideband or putting it on the dyno, the fuel smell could be something mechanical. Check that code out before you go stepping on it

 

sounds to me with bad MPG that the secondary O2s are still turned on in the tune

maybe use the tuner to read a code, or get one of these inexpensive bluetooth readers

 

I plan to run everything tmrw with euro flash

 

Yea bro im going to use the euro flash software tmrw and scan it then send it to them

 

It's the header. Without the primary CAT, if you drive aggressive then you will smell some burn gas. I was in the same situation after having the header installed.

 

uhhhhhh what?

Mine are still turned on with longtubes, with a cel and I have no issue of poor mpg. Sounds to me like you're just guessing.

 

Seems like you've developed a taste for Toad recently

 

Post the code when you read them. Also, check for exhaust leaks forward of the primary O2 sensors if you just put headers on.

 

Ran the codes yesterday and it said its the 2ndary o2's, might just shut them now I guess

 

so if the secondary O2s are reporting like there would normally be a catalytic in place it would lean out (not make it rich) because there is no reduction in measurement without cats

 

Did you end up getting the retune from EC? How is it going at the moment?

 

Not yet, haven't had time recently, my CEL did turn off by itself though, and the mpg has improved,also Phil is away for the week and I don't want to bother Jerry to much during Xmas, next Monday 100% I'm sending in my logs

 

I don't think so I've had 3 Mercedes techs check it out all said running rich

 

Install a wideband sensor, and the you'll know for sure what's going on. I'm about to install dual widebands before the primary cats, just to better keep an eye on things (plus I'll also be able to do remote road tuning).

 

I had a similar issue with my ec box tune, I got on a dyno and got a hold of Jerry on the other side and he sent files back and forth in between pulls with Powerhaus here in the Tristate. I picked up 45whp and dropped 10wtrq after retune and cutting back on some fuel. I think i was at 11.7 afr as well, can't really remember though.