Hi

My Evo IX sometimes dies like is loaded with too much fuel (I can see it on the Aem wideband going all the way to 10.0)

It happens every time i let go of the gas and press the clutch(when i begin to slow down or have to brake hard with clutch pressed)

The RPM start going down slowly until they reach 1k and it shuts off.

To prevent this I sometimes have to press the gas to increase RPM and not let it die if it dies i have to start it up again and sometimes when i do i can see alot of black smoke (alot of fuel being burned) coming from the engine bay and exhaust.

I have search some info and so far i believe is the injectors, they are not stock and i bought the car used with them installed and I don't know what they are , looking to get some stock ones. too see if it solves the problem and also because with 340whp i don't believe i need them

But what you guys think

 

Do you have a vent to air blow off valve?

 

Bring it to your tuner.
*oops, didn't see previous guy asking about the bov *
What kind of BOV/recir valve is on the car?

 

Tune is the next part I would look at being off.

 

It has been Tuned , it did help a lil but problem still persisted , also when the vacuum lines where being fixed it helped a lil too

So it migth be the BOV

dont know what type of BOV all i know its HKS (not replica) , you can see where it is on the pic

 

HKS -- VTA...take that off and put of a proper recir. valve. You cannot use a VTA with the current MAF setup.

 

What do you recommend? the stock one?, i already got tired of the BOV sound it was fun the 1st 4 months.... also ill have to change the pipe too then

 

There are a handful that I like. Forge RS was my top choice. APS dual-vent is another well used here. OEM IX is great too. Tial Q is good too.

 

Get a stock 9 metal BOV, it will give you the best reliability and driveability.

I would say you should probably do a boost leak test as well.

 

Thanks for the info , really appreciated , i will start looking one of those

 

You have an IX -- your OEM should be the metal version.

 

You can try the Synapse DV that they just came out with recently as well.

 

yea that is a pretty cool bov. i wanted to try that one out myself

 

Not tested the new one but the old one worked well for me.

Yeah burn the HKS BOV with fire!

 

My buddy had one on his vortech s/c mustang and it worked great. Alot better then bosch one those kits came with.

I had their old one and I was extremely happy with it.