Timing opinions for rebuild
Hey everyone, I should have my engine ready to reassemble in just a couple of weeks. I'm trying to work on my tune now and I have a couple questions regarding timing since I am changing compression.
I'm throwing in some DET pistons, I just need some opinions or ideas as far as the timing maps go. I have a U13 DET ECU currently with a Calum Basic, GTi-R T28, GTi-R intake manifold and 444cc injectors, and am currently only running 7lbs, but plan on running 12lbs as soon as I can get a boost controller.
I figure I have two options. I can either:
1) Use a stock U13 timing map since it was 8.5:1 to my knowledge, and then turn it down just a bit in the top-end since I plan on raising the boost a little later. Or
2) I could use a GTi-R timing map (which is much more advanced) since I'm using so many GTi-R parts. I know it has 8.3:1 CR which is why it's probably advanced more, so I was thinking of taking off 3-5* across the map?
Which of these seems like a better idea? I've never had to retune for anything other than the fuel map, so I am a little lost on this one.
I also was looking at this timing map posted here by Vadim, it looks pretty decent as well.
All help is appreciated,
Nate
I'm throwing in some DET pistons, I just need some opinions or ideas as far as the timing maps go. I have a U13 DET ECU currently with a Calum Basic, GTi-R T28, GTi-R intake manifold and 444cc injectors, and am currently only running 7lbs, but plan on running 12lbs as soon as I can get a boost controller.
I figure I have two options. I can either:
1) Use a stock U13 timing map since it was 8.5:1 to my knowledge, and then turn it down just a bit in the top-end since I plan on raising the boost a little later. Or
2) I could use a GTi-R timing map (which is much more advanced) since I'm using so many GTi-R parts. I know it has 8.3:1 CR which is why it's probably advanced more, so I was thinking of taking off 3-5* across the map?
Which of these seems like a better idea? I've never had to retune for anything other than the fuel map, so I am a little lost on this one.
I also was looking at this timing map posted here by Vadim, it looks pretty decent as well.
All help is appreciated,
Nate