Ever since I had my car tuned I've had this issue. Didn't mention it to the tuner for some reason, but I'll ask him when I hit the dyno in the next month or so

Whats happening is that after I shift and mash back on the throttle, the engine cuts out for a second, then kicks back in again and pulls just fine. It kinda pops and doesnt do anything then goes like hell after it starts going again

You can hear it in this video from the drag strip when the problem is most apparent (mainly the 1-2 shift, and 2-3)

http://www.youtube.com/watch?v=bg6eM_Qt3c0

Change the plugs every 5k miles, NGK BKR7E gapped to .025. Plug wire resistance is well within spec. Only running 7psi at the moment due to boost controller issues

 

What EmS

 

Neptune in a P28

Tuned by Jei @ Blacktrax

 

Is your wideband input to the ecu? I used to have that problem when lean protection would go off from being a tad lean in between shifts

 

No, its just to the gauge. I'm gonna pull the plugs tomorrow and see if gapping them down tighter helps, but thats just a shot in the dark honestly. Its easy though, so I might as well give it a try

I was maybe thinking of trying to datalog the AFR to see if it spikes lean or rich at those points. I wasnt really watching the gauge during the runs, heh. Just need to find my datalogging cables for the wideband...

 

oh wow, i have the same exact problem with my car. when i go 100% throttle it would pause and then kick it. thought something is wrong with my car. i'm also running NepTune. i took it back to my tuner and he did something, but i since haven't tried shifting at 100% throttle to see if the problem was fixed

 

mine cuts out every now and then, but only when im about to shift.. also tuned on neptune.

My tuner said a street tune will clean everything up since a dyno can only do so much.

Kenny aka Turbogixxer @ blowbyracing

 

try full throttle shifting and see if it still does it

your granny shifting maybe taking to long and causing this issue

 

Contact HR tuning, drop him a pm with a link to this thread so the info is here for future refrence.