My mods were AMS 3" TBE, Cone filter, MBC, tune

I recently added a AMS FMIC, Ported exhaust manifold, cams and 02 housing and got it re-tuned at AMS yesterday.

It drove fine all the way home (150 miles), but now when i get on it and make a hard shift at 7K+ RPM's it falls on it's face once i get into the next gear, then takes off again. It's now doing this every time in every gear everytime i get on it.

So basically if i floor it in 1st gear, it's fine, i shift into 2nd quickly, floor and it stutter's you hear a faint pop/pop and it takes off again.

Any ideas?

And i feel the stock bov is fluttering more than ever at part throttle (I thought maybe it was leaking??).

This is an 06 Evo with 25K miles if it matters.

 

I would contact AMS since they are the ones that tuned your car.

 

I would get ahold of someone at AMS and explain your problem. I am sure they will fix it for you.

 

It sound like my car before i changed out my sparkplugs. Mine stuttered shifting between 6-7K rpms when getting on it. Other than that it was driving ok. I was using Denso IW-22s for about 25K miles and I replaced them with the same sparkplugs and the car drives fine again. I might also change out my spark plug wires soon.

But definitely call AMS and see what's up. I'm also curious to know what's going on.

 

same thing happned to me wen i would make hard shifts after my tune....it was not enough fuel and was running to rich....call ams and tell them.....or do u have a bigger fuel pump??...its deff a fuel problem i had the same thing

 

I was having the same problem, so I check the spark plugs gaps it was too high.
I reduce the gap the the "miss" went away, occasionally i still get it, so I went and try the copper plugs everyone was talking about, and I was surprised that copper actually perform better than the iridium!! Copper has better conductivity than iridium, check the periodic table.

 

stock fuel pump, i'll get a hold of ams today. I'm sure AMS will take care of it, it's just that if it's something simple, i don't want to waste a drive back there.

 

Well they said to try new spark plugs. Put in some new factory plugs today and it didnt help at all. I'll have to give them a call in the morning again.

Any other ideas??

 

i would get some copper plugs with a smaller gap... your best bet is to log the car.. if its only between shift i doubt its the tune.

 

Where is the "pop pop" coming from? The front of the car or the back?

 

isnt fluttering normal for evos? I started to hear my bov flutter after installing cone filter.

 

its a fuel problem i no for a FACT. my evo had the same problem when i was int he tuning stage they need to play with your maps some more.

 

definately the front.