HHR SS Auto Trans questions
09-08-2012, 09:15 AM
#21
Senior Member
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Join Date: 12-20-2011
Location: Cape Cod, MA
Posts: 120
Word of advice.
If you are under 30 years old check to see how much insurance is before you buy. For some based on several factors a Turbo engine can lead to high insurance cost. Best to find out before you sign for the car.
Second even if you drive a stock automatic keep in mind the Turbo Upgrade is what needs to be added to put the Auto on even ground with the 5 speed. With out it you are down 45 HP and it is a different vehicle. So keep it in mind if you drive one.
If you are under 30 years old check to see how much insurance is before you buy. For some based on several factors a Turbo engine can lead to high insurance cost. Best to find out before you sign for the car.
Second even if you drive a stock automatic keep in mind the Turbo Upgrade is what needs to be added to put the Auto on even ground with the 5 speed. With out it you are down 45 HP and it is a different vehicle. So keep it in mind if you drive one.
And im not sure what you mean by the auto needs a turbo upgrade to compete with the 5 speed, I was under the impression thats it all in the tuning, so if I do, airbox cover delete, catless dp, intercooler and run a 24psi tune it would net similar hp regardless of which transmission (the auto losing a pinch more through the drivetrain). Do I just need to add 3 Bar map sensors? thats all the GMPP is, sensors and base tune.
09-23-2012, 09:26 PM
#25
Senior Member
Join Date: 06-26-2008
Location: N.W. Burbs Chicago
Posts: 4,152
So the new to me 2010 has the GMTU that i thought was'nt working , Then tonite it spiked to 20 PSI in 3rd gear. What is an average you guys are seeing in boost whith the GMTU , I know weather ect. affects this , But what is the norm. ?
I maybe having a lot of ?'s for you auto guys , As i never payed a ton of attention to the info i now need with my auto , DOH !!!!
I maybe having a lot of ?'s for you auto guys , As i never payed a ton of attention to the info i now need with my auto , DOH !!!!
09-24-2012, 12:00 AM
#28
Senior Member
Join Date: 01-13-2008
Location: Washington State, where it rains
Posts: 4,708
If it doesnt seem to be boosting like it should, do the old pull the ECM fuse and let it reset..I find after puttering around for too long the brain picks up the habit..so it runs like you drive it, even when you want it to do more....ex-driver might now have ever "driven" it
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