Diary - 427TT install
Discussion
Harryoz said:
While I'm here, an update.
It has been out on the road for a remap and has done at least 70mph, in NA "mode". Going to put some miles on and then reconnect the blowers
Why are you running the engine in NA... is it an issue with mapping? Just curious as not heard of this being done before...It has been out on the road for a remap and has done at least 70mph, in NA "mode". Going to put some miles on and then reconnect the blowers
S600VXR said:
Harryoz said:
While I'm here, an update.
It has been out on the road for a remap and has done at least 70mph, in NA "mode". Going to put some miles on and then reconnect the blowers
Why are you running the engine in NA... is it an issue with mapping? Just curious as not heard of this being done before...It has been out on the road for a remap and has done at least 70mph, in NA "mode". Going to put some miles on and then reconnect the blowers
50% of the tune (depending on boost) is actually off boost, so to make things easier and safer I can understand that mapping the low map area's, fueling and spark makes sense. It also gives you an idea of what timing and fueling will be on boost and allows you to jiggle things around before hammering loads of boost in there and it being too late to change anything because there is a conrod punched through the side of the block with a part of a melted piston sitting on the top 
Also things like fuel pressure, engine mounts, driveline etc can be tested under lighter loads.
No point driving off under full boost without doing all the prep work first. Just takes ages unless you have done some before.
Also things like fuel pressure, engine mounts, driveline etc can be tested under lighter loads.
No point driving off under full boost without doing all the prep work first. Just takes ages unless you have done some before.
stevieturbo said:
Problem being, a n/a map with the standard style intake, will require further work once the blowers are hooked up again.
If the LS7 intake is anything like the LS6, then it will work superbly with boost.
I understood that as its made from plastic it may not cope with the pressure? Be good if it was able to hold together in one piece. If I thought it would, I'd see how far it might go.If the LS7 intake is anything like the LS6, then it will work superbly with boost.
LS6 will easily handle 20psi. I just dont think too many have went over that. Not because it cant, because at that level, most people just go for carb style intakes, or custom sheetmetal.
I only went for a carb style, because I liked the look of it, and it was a fraction of the cost of a sheet metal intake. There are guys running 8's on a standard LS6 inatke.....it cant be that bad lol.
Aluminium does look nicer than plastic thought. ( FAST plastic inatkes are a waste of money when boosted, and some of those have blown apart. Although I think that was an early problem, that they rectified. )
I only went for a carb style, because I liked the look of it, and it was a fraction of the cost of a sheet metal intake. There are guys running 8's on a standard LS6 inatke.....it cant be that bad lol.
Aluminium does look nicer than plastic thought. ( FAST plastic inatkes are a waste of money when boosted, and some of those have blown apart. Although I think that was an early problem, that they rectified. )
Harryoz said:
Latest. All plumbed back together and happily running around at low rpm and low boost levels.
Roger now putting some miles prior to getting the exhaust finished next week and some meaningful boosted mapping after that.
Good news....Roger now putting some miles prior to getting the exhaust finished next week and some meaningful boosted mapping after that.
I assume the problems were just tuning related then ?
stevieturbo said:
Harryoz said:
Latest. All plumbed back together and happily running around at low rpm and low boost levels.
Roger now putting some miles prior to getting the exhaust finished next week and some meaningful boosted mapping after that.
Good news....Roger now putting some miles prior to getting the exhaust finished next week and some meaningful boosted mapping after that.
I assume the problems were just tuning related then ?
Harryoz said:
stevieturbo said:
Harryoz said:
Latest. All plumbed back together and happily running around at low rpm and low boost levels.
Roger now putting some miles prior to getting the exhaust finished next week and some meaningful boosted mapping after that.
Roger now putting some miles prior to getting the exhaust finished next week and some meaningful boosted mapping after that.
Good news....
I assume the problems were just tuning related then ?
Unsure. We've removed the custom inlet manifold from the equation and with the LS7 manifold on it seems fine. Having said that the tune hasn't been pushed yet so no doubt other issues will reveal themselves in due course!
No, no tuning problems. The custom intake as supplied simply doesn't work at low rpm in a street application. Probably flows great at high boost/rpm but just isn't tractable on the street. Stock LS7 manifold has completely resolved these issues.
Currently, as observed there is no charge cooling, this is just a temporary arrangement to allow mileage accumalation/shakedown. Charge cooling will be fitted in due course.
Mate that things is going to definitely be something special that is for sure.. 
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