OK, let me elaborate. I�ve been running turbo race cars for a few years now and have quite a bit of experience with them and have learnt an awful lot in the process. The first mistake I made and the first learning experience I had was with mapping. If you are making lots of horsepower you need to cool lots of horsepower and to do any meaningful mapping work the temps need to be stable. With 400bhp on a rolling road how on earth do you get the required cooling?? Blowing a fan at the intercooler is just not going to cut it. You might see some good (RR exaggerated) figures briefly but the likelihood of translating that to something that works on the road/track is somewhere between slim and nothing. The other thing is don�t do your mapping work on the road, do it on the dyno properly, otherwise you are heading for trouble.
Don�t get me wrong, I think it�s great that somebody is doing upgrades for the yotamota as it�s desperately needs it and I wish you guys luck. I�m just very sceptical when it comes to silly power claims and bling bling brake callipers and the like.
Ok fair enough Randy now i understand where you are coming from , it is not possible to map the engine from bad to good in 1 go. That is a very valid point and i will state that the car is run on the dyno very regularly, so i would assume that a base map was used when the engine was first installed and that the problems points are addressed incrementily thereby eliminating any errors that could occur. It would be very unlikely that a car generating that much heat could spend a full day on the dyno with decent results. However this engine configuration has run in Logan’s previous car for a number of years with good results.
So what i am trying to say is the figures are achieved after years of development work, it was not just slapped in the car and run on the dyno to achieve a BHP figure. As with anything practice makes perfect and they have practiced alot on this setup.
So in the immortal word of the black knight, We’ll call it a draw
Ok fair enough Randy now i understand where you are coming from , it is not possible to map the engine from bad to good in 1 go. That is a very valid point and i will state that the car is run on the dyno very regularly, so i would assume that a base map was used when the engine was first installed and that the problems points are addressed incrementily thereby eliminating any errors that could occur. It would be very unlikely that a car generating that much heat could spend a full day on the dyno with decent results. However this engine configuration has run in Logan’s previous car for a number of years with good results.
So what i am trying to say is the figures are achieved after years of development work, it was not just slapped in the car and run on the dyno to achieve a BHP figure. As with anything practice makes perfect and they have practiced alot on this setup.
So in the immortal word of the black knight, We’ll call it a draw
I don’t know if you are just talking the Toyota motor Randy, as I haven’t had one of those apart, but if you are just talking about getting over 400BHP from a 2.0 ltr turbo charged engine. My Escort Cosworth was dyno’d at 515BHP on Optimax and did over 15,000 miles with no problems at all.
I totally agree with what you are saying about rolling roads, they are totally inadequate for turbo charged cars. The map we had at the end of the dyno session also took three days of tweeking at Bruntingthorpe running up and down there runway with EGT sesnors in each exhaust header, wide band lambda, and temp sensors everywhere.
Tht car properly went though man!!!
My mate has a 605BHP YB cossie engine that runs a STOCK bottom end, mind you YB stock is still all steel and he only revs it to 7,500RPM, and again that is about a year or so old now, so must have done over 5,000 miles and loads of track days.