Well, I have to say that my car has been driving strong without any issues prior to GIAC and V-Flow install. After the install about 3 weeks ago, the car was even stronger and pulled so much harder, but for the past week, I am having a flashing CEL while WOT only in the higher gears. The car seems to pull 1.2 bar, then right around 4100-4500 rpms, I get a series of hiccups...then lose boost to .7 bar, then CEL. This only happens in 3rd and higher gears. First and second gears are very strong and pull like a freight train, without any hesitation or hiccups.

I brought the car to the dealer, and was advised to first check the MAF, and clean it. I did clean the MAF with "Wurth" special solvent cleaner (leaves no residue or film...per can), and thought the problem disappeared, but the next day the car had the hiccups again.

Does anyone know what may be going on with my Turbo? I am thinking either spark plugs or ignition coil packs. The tech at my dealer did hook the car up to their computer, and pulled the CEL as a mifire in bank 2 (I am not a mechanic). I am also not getting any PSM/ABS lights either. Thanks for any response.

 

The 700 kit with larger throttle body and a new set of plugs cured my car!

 

My stock turbo behaved similarly when the MAF was bad. It ran good up to about 3500 then started missing. It threw the P030x or pending p030x misfire code. If I drove it gently for a while with no misfires the light would sometimes go out.

 

If the CEL is flashing, you may be having a misfire. What was the code when you took it to the dealer?

Oops! I just noticed you DID have a misfire code. I would remove the plugs on bank 2 and have a look at them. The plug that is misfiring should stand out. If you haven't changed plugs in awhile, you might want to do so now making sure they are cool enough for your boost level and the gap is small enough.

 

From reading previous threads, it seems everyone with the EVO V-FLOW intake is having trouble with the maf? I was thinking about the intake, but at this rate I'll wait till they get it to stop tripping the CEL.

 

Actually, I do get a flashing CEL when I encounter the "hiccups". The CEL flashes maybe 10 times while displaying go to workshop, then goes out completely. I then check the screen, and get the drive to workshop message. After turning the car off then on, the error code disappears...of course stores again when the CEL turns back on. There was a code for a misfire in bank 2, but of course I forgot the exact wording of the code.


I spoke to Nate at Evo and he thinks more than likely it is the plugs on the car. He thought it was weird the hiccups only happen between 4-4.5K rpms and 3rd gear and higher only.

 

Nate also said that if was the MAF, I would constantly be getting the CEL/ABS/PSM lights all of the time. I only get the CEL light.

 

I'm with Nate. I don't see how a misfire could be caused by their intake. Like I said above, remove the plugs and have a look. You may see a bad plug, coil or wire that jumps out at you. I would think that if you had a misfire caused by a plug, coil or wire, you would have it in all gears at the same engine speed, but stranger things have happened.

You might also try rebooting the computer by removing the negative cable from the battery for a few minutes. Did GIAC simply flash the Porsche chip or did the have to remove the computer and install a new chip? If the computer was removed, try disconnecting the cable from the box and put it back on to eliminate any bad connection.

 

I had Evo flash the chip at the local dealer near me. They were in town about 3 weeks ago, and just plugged the connector into the OBD2 port.

https://www.6speedonline.com/forums/...hlight=tischer

So, if I try rebooting, like you said, what would that exactly do? I have tried the negative battery cable disconnect before to try to clear some fault codes when I was having some boost leaks many months ago.

 

Rebooting the computer will remove all errors and setting from volatile memory. You will experience a little idle hunting during the first few drive cycles after your reboot. It's may not have anything to due with your problem, but it's a free, quick thing to do. Many time, just like your home computer, a bit and and byte collide and the only way to clear it out is to reboot.

 

When I get home tonight after work, I will try this, and cross my fingers and hope it works! If not, I have made an appt for this Monday at my dealer (Tischer) to get my coil packs looked at, and also possibly changing out my spark plugs. How extensive is it to change spark plugs on these Turbo's?

 

what year is your Turbo?
what is your giac setup? (stage 1 ? stage 2?)

 

Id say from experience,

put a set of plugs and a maf sensor in it.

 

My Turbo is an 01 with original spark plugs in them with about 22k miles on them. I had done GIAC stage 1 as of right now.

 

Then you definitely want to get the plugs replaced. I had the same thing happened to me. My 01 car ran fine all these years until I had the stageII flash. Need to get the new plugs to compensate for the increased HP. That's the other "upgrade" that your dealer should've warn/told you about.