Mods:

Turboback exhaust with test pipe 3"
Intercooler Hardpipes
AMS Short Ram Intake
Cobb Off the Shelf Stage II AMS Flash

Symptoms:

Throws P1235 code after only 1 lap on road course (Grattan Raceway) over and over again. I cannot replicate this problem on the street. The car is overboosting (boost gauge spikes to 27 psi) and freaking the ecu out. This only happens when driving the car during time attack/ HPDE events. I normally can't even get 1 clean lap in before the ecu goes into limp mode. I remember reading about Ryan Gates having a similar issue that Chris from AMS was able to work out.

Any ideas?? Thanks in advance!!

 

put the pill back in.

 

It's likely a combination of the hard pipes and test pipe. Once I got that combo with my accessport, it was P1235 city.

You have three options:
1. remove one or the other or both (yuck)
2. get a custom accessport tune to handle it
3. get rid of the accessport and get something else that you will then get a custom tune with

(so really 2 and 3 are the same thing).

I went with #3. Retunes are too $$ with the AP IMO.

 

or you can use accesstuner race.....

 

Thanks for the advice. Does anybody know why this only happens when throwing curves into the mix? I cannot get my car to throw a p1235 no matter what I try off of the roadcourse. I have tried flooring it up a hill with ac on in 4th gear to try and really load it up. The car simply boosts to 25 psi as it should and no codes. You put the car on a track and start sliding it around and what do you know.... limp mode and p1235???

 

How much gas is in the car?

Only after left hand turns?

The X has a saddle designed gas tank and the pickup is on the left side of the tank. If you have less than 6/10'ths of a tank (or even more depending on the track) and you make left hand turns, the car will experience fuel starvation, run lean and do very bad things (during the left hand turn, the gas goes over to the right side of the tank, and the pickup sucks air). The experience is much like hitting the rev limiter, but you're not going very fast... the car sputters on the straight after the turn. It is quite disconcerting because you lose a LOT of power when this happens.

Most of us who track the X fill up after every session to make sure that this doesn't happen. AMS had a fuel surge kit, but I guess they pulled it from the market because it wasn't safe.

Even when the gauge reads 75% left, I fill up after the session because the gauge is typically wrong because of the fuel sloshing around.


All that said, I've never gotten the airflow check code (P1235) when this happens.

 

I have a theory on this. It is not fact, simply a theory. Cobb tells you to remove one of the pills by the solenoid side with stage 2. I think this is boneheaded. These pills are there to regulate and smooth out the boost curve. I suspect that under hard use the boost is spiking all over the place causing the car to overboost and give you the p1235.

So how do you fix this is my theory is correct:

1. Just as one poster mentioned, put the solenoid pill back in.
2. Adjust the BDEL tables with the use AccessTuner Race.
3. Adjust the Airflow/limiter tables higher.

The simplest solution is to put the pill back in.

 

^+1

Like I said I was getting spikes and throwing codes causing my car to go into limp mode. Ever since I have had the pill back in, it hasn't happened since then.

 

^+1!

Same thing happened to my freinds car.

 

Chris@AMS can fix this for you, you're close enough to come by and get a custom tune.

But so everyone knows, this is caused by partial throttle.

 

do you know what Chris does? Remap of throttle body/DBW map or whatever it is called?(there is a map for this right? not on my tooning PC)