Hello Since I installed an Agency power throttle boby and plenum I have always had an intermittent limp mode problem.

My 911 turbo (996) often go to limp mode when I drove in the highway a cruise speed, around 50mhp and 4th or 3 gear, when I driving in this condition and I hit full gas on the car sometimes the car does some cough and them go to limp mode ( I have to turn off the car and turn on and the limp mode going off)
When I hit full gas starting for 1st gear and them 2nd and 3 and 4 gear full rev in whole gears the car working perfect.

I have some mod in my car and I tried to change every thing I thought could be the problem but the car stay the same problem.

I think it may be the throttle body, could anybody tell me if the throttle body can cause a intermittent limp mode?

Thanks

 

Do a boost leak test.You have a boost or vacuum leak somewhere and is most likely not the parts.

 

Hi,Hows your boost readings?? After you put the set-up on, did you have the same peak boost as before the install when it did not go into limp mode??..If not,then sounds like a boost leak...How about after the limp mode clears up??...

 

I agree with Joe, vacuum boost leak, my guess when instal was done something was not hooked up properly or maybe a vacume line not hooked up at all, there are alot of little hoses, connections at the throttle body

 

Did you get it reflashed after you installed it? I would imagine it would need it but I'm not sure.

 

No retune needed. You have a leak, or the check valve by the oil tank was installed backwards.

Tom

 

aftermarket airbox causing issues with MAF?

 

..Still waiting to hear from him on his boost readings before and after install......

 

put on smaller 3/8th OEM size clamps and leak test it...

 

Hello everyone, the problem looks like throttle, the car always peak boost 1.3bar before and after, when the car go limb mode the car max boost is 0.9. and this happens ONLY like I said before, when I drove in the highway a cruise speed, around 50mhp and 4th or 3 gear, and I driving in this condition, I hit full gas on the car, the car going to limp mode.

I change everything (hard parts) the only hard parts that I don't change is the throttle.

I read that Agency Power Throttle have some issues, at least those that were purchased about 2 years ago. Actually after I installed that throttle the car always send a fault code

So, I ordered a new throttle, when I install it, I will let you know how I was.

Thanks

 

Whats your tuner say about all of this,any help??.....

 

Replace your MAF, it fixed the exact same problem for me.

 

Yep..and put a paper air filter back in. You will NEVER notice the difference and will likely never have a MAF issue again.

 

I really hope you can tell if that mod made a difference when you get this straightened out....

 

Like I said before, I change everything (hard parts) MAF, N75, Diverters Valves, Hoses, Check valve is ok, no leaks......