RIP85 REST IN PEACE V8 Donating Members 469 Member For: 16y 5m 6d Gender: Male Location: Woodridge on the park bench Posted 23/01/14 03:43 AM Author Share Posted 23/01/14 03:43 AM Pain in the ass I know, but if you can get a new rear housing and have this done I think you would see the benefits of holding solid boost curves with the external gate <br /><br />Yeah my tuner did this to a brand new garret housing I paid 450 for last month Link to comment Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 16y 5m 6d Gender: Male Location: Woodridge on the park bench Posted 23/01/14 03:45 AM Author Share Posted 23/01/14 03:45 AM This is kind of what I'm talking about, see how the pipe has been cut to flow the gas straight from the flange at the merge collector? <br /> <br /><br /><br />That setup that you posted a pic of was the same setup he had on a fg which lost 30rwkw also his customer went back to internal 1 Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 7m 20d Gender: Male Location: SW Sydney Posted 23/01/14 04:02 AM Share Posted 23/01/14 04:02 AM Yeah right... I'm not an expert by any means, but I think it has a lot to with the position of the wastegate pipe in relation to where the rear housing starts to split in to the turbine wheel. If you notice the one I posted is right down near the flange where as the ones on the falcon housing is a lot further up so the turbulence created will slow down the turbine wheel. Link to comment Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 16y 5m 6d Gender: Male Location: Woodridge on the park bench Posted 23/01/14 04:05 AM Author Share Posted 23/01/14 04:05 AM Yeah I see the difference now no worries I appreciate your input thanks Ben Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 7m 20d Gender: Male Location: SW Sydney Posted 23/01/14 04:06 AM Share Posted 23/01/14 04:06 AM No worries man, hope it helps you get a result! Link to comment Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 16y 5m 6d Gender: Male Location: Woodridge on the park bench Posted 23/01/14 04:30 AM Author Share Posted 23/01/14 04:30 AM To be honest over it just might hold off till tax time and go gtx42 in the last 13 months only driven the car 1,5 months 1 Link to comment Share on other sites More sharing options...
f6mark Member 2,908 Member For: 13y 7m 13d Gender: Male Posted 23/01/14 06:34 AM Share Posted 23/01/14 06:34 AM Jam the Boost in Ben. good right to Senna.T. hope u get it all sorted Ben. Link to comment Share on other sites More sharing options...
IH8TOADS Silver Donating Members 3,618 Member For: 19y 2m 19d Gender: Male Location: OZ Posted 23/01/14 09:26 AM Share Posted 23/01/14 09:26 AM If you're holding the same manifold pressure and the same ignition timing, what are people's thoughts on the cause of the lost power?I went from internal to ETM external (looks the same as pics) and when I retuned it to the same manifold pressure I didn't lose power. Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 7m 20d Gender: Male Location: SW Sydney Posted 23/01/14 09:42 AM Share Posted 23/01/14 09:42 AM I think checking the timing is probably the biggest clue there toad. If the turbine is being slowed then the motor can't pump the gases as efficiently and as a result timing would be retarded and I'm guessing the boost would come on more slowly too. I've never done any tuning, but could open vs. Closed loop tuning allow the timing to advance and retard like a factory tune? Or am I way off here? Link to comment Share on other sites More sharing options...
RIP85 REST IN PEACE V8 Donating Members 469 Member For: 16y 5m 6d Gender: Male Location: Woodridge on the park bench Posted 23/01/14 10:06 AM Author Share Posted 23/01/14 10:06 AM Just to add to the complication motor is a Low comp motor with 4 plus atomic cams and fixed cam gears still on factory PCM I'm sure my tuner will sort it out hasn't let me down in the past 1 Link to comment Share on other sites More sharing options...
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