Boosted Limited

U got other problems not the tuner. Just a coincidence that you tuned and it happened.

TwinTurboFx4

X2. It's not the tuners problem

Rider

I joined the tuner family. After putting it off, I got my Livernois and installed it yesterday.

First, let me just say that accessing the spark plugs on these motors caused extreme discomfort in the underpants region. The ones I was able to remove were all gapped at 0.032", so that was at least good news.

I had one code, the generic U3000(SYNC-related), which seems to mean more or less nothing. I installed the 93 Performance tune, but only had time for a short ride. It seems to be shifting a lot tighter, and have much less hesitation when you depress the accelerator rapidly, but I'll have to drive it a bit to say for sure. One session of driving angry should make it clear.

Does anybody know, or have an opinion, on whether you need to go back to stock tune for inspection, and if so, how much time you need to have between changing tunes and getting inspected? (I have a friend whose Civic codes a lot, and if he doesn't drive 100 miles or so after clearing them the inspector won't pass him.)

TMizzy

Same deal. Reflash it back to stock because if you have an emissions test done it will throw a code indicating the battery was disconnected. Then they need to take it for a drive to get it to clear. I'd do it a few days prior to taking it in.

WalleyRuss

So I was able to get the truck to shudder again and thow a PO305 code again while in stock mode. So I pulled all of my spark plugs and they look alright. They weren't cracked, or burnt, all of the electrodes look fine. So I put them back in the truck but I swapped which side of the motor they are on and swapped them front to back on the cylinders. Then I re-flashed the truck back to 91 octane performance mode and then took it out again. There is still a slight hesitation, but no shudder. I couldn't get it to repeat the shudder. So I'm thinking a new set of plugs is in order and then I'll go from there.

On a lighter note, I lined up for a little fun in "mexico" with my son in law's 2007 Audi A4. We went from a 30 mph roll, he got the jump and pulled about a car length on me, then I slowly pulled on him and passed him around 100mph!!! So then we went again, also from a 25-30mph roll (he says he started in 2nd gear in the first race, he started this 2nd race in 1st gear higher in the rpm band), and he immediatly pulled about 2-2.5 car lengths on me and we stayed like that (I may have been pulling on him ever so slightly) up to about 120mph where we let off. Very impressive. My son in law said from the beginning that he thought it was going to be close, and he was right!

His A4 has a 2.0L Turbo 6mt, 93 octane tune from APR, CAI, test pipe, and down pipe. About 265chp 300lb/ft of torque in a 3,500lb AWD sedan. Very fun little car! Haha

TwinTurboFx4

Told you it isn't a tuner issue. It's the common ecoboost loss of power. Take to dealer for diagnosis and see what they will do. Mine ended up being a coil pack.

Boosted Limited

What I said. ^^

Boosted Limited

Wrong. ^^

WalleyRuss

I believe you good sir were correct. I've gotten the PO305 code twice now, once tuned and once in stock mode. So if it does it again and I get another PO305 code I think I can be pretty sure it's the coil pack on that cylinder.

Question- Was your truck stock or tuned when you took it into the dealer? I'm a bit nervous about taking the truck into the dealer after being tuned. I've heard that if you flash it back to stock, then disconnect the battery for about 30 minutes, and then drive it for about 50 miles or so to fill up all of the logs in the ecu that it will leave pretty much no trace of the truck being tuned. I just want to have the greatest chance of preserving my warranty, the truck has just over 15K miles on it. Thanks in advance for the advice!

Boosted Limited

Put it back to stock. Then take it in. And if they ask which they won't tell them you disconnected the battery to get the cel to go off.