Renault GTA the Murphy's Law Adherent
Discussion
I have been helping my mate Martin tune his 2.5 V6 turbo GTA Renault with a V6 PRV engine since August 2010 when we first ran it on the rollers. It has been a s*d! It obeys Murphy's Law that anything that can go wrong will go wrong, it has fought us from the word go! At long last it is running properly, Friday 9th Jan after yet another all dayer it held together, nothing went bang, nothing fell off, fuelling stayed good and the boost held up. We got 365.3 at wheels with a load to spool up the turbo and 36 losses which gave 401 bhp at engine. Martin built the turbo for 420ish bhp so we are somewhere near. Best to put it into a shed and not start it again I reckon, it's only taken 4 years and 5 months 
Peter
Peter
Martin was well pleased with the end results.
We have just finished the after part of a before and after on a more down to earth Alpine. Lee from Renault Alpine Tuning Services (Rats) and Martin have just spent the day with us fine tuning. I attach the three end result graphs. Black line was std engine at around 8 psi made 161.8 at wheels with 36 losses giving 197.8 at engine, rated at 200 engine bhp originally (Factory figure). Red graph with 11 psi boost on new turbo, 199.6 at wheels giving 235.6 at engine. Light blue line 13 psi boost 214.9 at wheels giving 250.9 at engine.
Peter
We have just finished the after part of a before and after on a more down to earth Alpine. Lee from Renault Alpine Tuning Services (Rats) and Martin have just spent the day with us fine tuning. I attach the three end result graphs. Black line was std engine at around 8 psi made 161.8 at wheels with 36 losses giving 197.8 at engine, rated at 200 engine bhp originally (Factory figure). Red graph with 11 psi boost on new turbo, 199.6 at wheels giving 235.6 at engine. Light blue line 13 psi boost 214.9 at wheels giving 250.9 at engine.
Peter
.
Great day, thank you Peter for the help, and as always some finer setup learning. Here's a short video link of one of the runs of Terry's car mentioned in the above post.
http://youtu.be/dP_vK1XM8F4
One of the other key points is that we are reverse engineering the OE Renix / Fenix ecu running these PRV V6 turbo engines, well old technology now, and became quite a challenge on it's own let alone everything else. Looking back I don't think I would do it quite the same again, even though the reasons were valid. I have, however, learned loads about the way the algorithms work and coded, as well as the efi setup and tuning you would need to get to grips with any ecu coupled to the needs of a particular engine package with an atermarket or otherwise ecu... it has been a journey... all the testing has been done at Peter's, and the amount of advice has been an education in itself, so thank you.
Martin
Great day, thank you Peter for the help, and as always some finer setup learning. Here's a short video link of one of the runs of Terry's car mentioned in the above post.
http://youtu.be/dP_vK1XM8F4
One of the other key points is that we are reverse engineering the OE Renix / Fenix ecu running these PRV V6 turbo engines, well old technology now, and became quite a challenge on it's own let alone everything else. Looking back I don't think I would do it quite the same again, even though the reasons were valid. I have, however, learned loads about the way the algorithms work and coded, as well as the efi setup and tuning you would need to get to grips with any ecu coupled to the needs of a particular engine package with an atermarket or otherwise ecu... it has been a journey... all the testing has been done at Peter's, and the amount of advice has been an education in itself, so thank you.
Martin
Edited by MFaulks on Sunday 29th March 13:35
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