I have a evo x mr that I got tuned the other day but i noticed i got a engine code p0172 system too rich when i come to a full stop then accelerate the rpms drop about 50-100 then the car continues to go. I took it back to my tuner they saw what was wrong and I got it back and the engine code is gone but I still have that rpm drop issue but it’s not as bad as it was before


obv I’m going to take it back to the tuner but just wanted to see if anybody else had any similar issues or knows what’s up


mod list


grimspeed boost controller

Ets intake

Ets open dump

Catted testpipe

Ets straight pipe v3

 

Who is your tuner? Is he a reputable pro-tuner with a lot of Evo X tuning experience?

 

iveytune in nj they’re reputable

 

Well I heard that the IveyTune is among the few best tuners on the planet. I hope they fix the RPM drop like the master tuners they are, after you take the Evo X back. Keep us updated if you will, please.

 

Did you get a Boost leak test done before the tune?
Start there, sounds similar to a boost leak I had, bov got replaced & fixed.

 

is it SD tune?