2005 Gto a4 to th400 tune help
08-29-2015, 02:07 PM
#1
10 Second Club
Thread Starter
iTrader: (2)
Join Date: Sep 2009
Location: Cape Gir., MO
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
2005 Gto a4 to th400 tune help The car is a 2005 Gto and originally an a4 car. The swap to a th400 is complete minus figuring out the tune. I've figured out the wiring to allow the car to crank and start. Tho it has not idled but for a short period due to still needing to retune for the upgraded injectors. My main concern/question is what is the best route as far as the Trans tune goes. Should all the codes associated with the auto Trans just be turned off or should the tune be swapped to an m6 car tune? Hptuners is being used for tuning btw.
08-29-2015, 02:17 PM
#3
10 Second Club
Thread Starter
iTrader: (2)
Join Date: Sep 2009
Location: Cape Gir., MO
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
2 questions about doing that. Will the pcm look for the clutch switch instead of the neutral safety switch found on my a4 car? And I currently have the speedo hooked to the 40 tooth reluctor and electronic speed sensor that is said to work. Will this change with a manual tune since the manual looks for a 17 tooth relector ring??
09-01-2015, 09:25 AM
#4
10 Second Club
Thread Starter
iTrader: (2)
Join Date: Sep 2009
Location: Cape Gir., MO
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
Fwiw, we were able to get the car running without swapping to a manual tune. No check engine lights and no other problems. The car was dieing a few seconds after firing and the thought was it was to do with either the trans swap or the larger injectors. Turns out, vats was killing the car.
09-01-2015, 12:11 PM
#5
With the auto trans OS, you have tables that differ between the car being in P/N or in gear. Nothing is telling the PCM that now. It may be running but with auto trans that have no PCM control it is better to run a manual trans OS. Things like speedo reluctor counts are easily changed if needed.
09-01-2015, 12:32 PM
#6
10 Second Club
Thread Starter
iTrader: (2)
Join Date: Sep 2009
Location: Cape Gir., MO
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
is it possible to tune the table that the car stays in then? The car is sd tuned and is almost just a track car. Very limited street driving. I'm not against swapping to a manual tune still but we just haven't got to the point where we must yet. We have not started to street tune yet only a start up tune so fluids could be checked and topped off.
09-01-2015, 10:57 PM
#7
I always switch to a manual OS because I have seen in the past weird issues come up when leaving the auto tune in. Mostly at random timing would be pulled out and nothing would fix it, switched to a manual OS and it never pulled timing again. This happened on several cars including one of my own.
Trending Topics
09-02-2015, 02:28 PM
#8
10 Second Club
Thread Starter
iTrader: (2)
Join Date: Sep 2009
Location: Cape Gir., MO
Posts: 426
Likes: 0
Received 0 Likes
on
0 Posts
I always switch to a manual OS because I have seen in the past weird issues come up when leaving the auto tune in. Mostly at random timing would be pulled out and nothing would fix it, switched to a manual OS and it never pulled timing again. This happened on several cars including one of my own.