Post your dyno curve here
Discussion
macdeb said:
Guys, not wishing to piss on someones fireworks, but I seem to remember not too long back on here that a serious amount of work had to be done on a RV8 to achieve monster status [300hp]. Now it seems everyones doing it, so, what's changed? Just a thought 
I would say a lot of is down the aftermarket ECU's most people are using. Mine has the original stuff and only just breaks 300 despite extra capacity. macdeb said:
Guys, not wishing to piss on someones fireworks, but I seem to remember not too long back on here that a serious amount of work had to be done on a RV8 to achieve monster status [300hp]. Now it seems everyones doing it, so, what's changed? Just a thought
Technology and disposable income Mac 
domV8 said:
Looking at the torque vs BHP figures, I'm guessing it made that BHP around 6800-7000rpm or similar..?
Dom
Hi Dom. You are bang on where peak power was matey!! Dom
Chimpongas - although it was a race engine, it was a pussycat to drive round thr paddock etc. Would even pull up mams street in 5th at about 20-30mph lol...
![](http://thumbsnap.com/sc/Kdnqq9SE.jpg[/img]</a> <a href="http://thumbsnap.com/CVbWNy20" Target="_blank">[img]http://thumbsnap.com/sc/CVbWNy20.jpg)
A900ss said:
Alexdaredevils said:
4.6 V8D with ranger rover cam! before and after decat
25hp just from a decat? Impressive. Surely that's not the normal increase though?
and it made a significant difference to the torque curve... Seemed like it was the last piece of the puzzle to unleash the horses that were already in there trying to get out 
QBee said:
Daz, if you are serious, the top squiggly line means you have 370 torques. The bottom one means you have nice even fuelling across the rev range. 1 lambda = 14.7 AFR, so yours is running at 12 to 13 AFR.
Iam serious ,is 370 torques a lot and are you saying it`s setup to run 14.7 on cruise and 12 ,13afr on acceleration, Think my lambda gauge is miles out.Don`t think there is a substitute of a rolling road for maximum power , a good mapper and then sorting the low down drivability out on the road.
I would recommend Jools all day long . He is one of those who knows what he is doing .
SILICONEKID343HP said:
QBee said:
Daz, if you are serious, the top squiggly line means you have 370 torques. The bottom one means you have nice even fuelling across the rev range. 1 lambda = 14.7 AFR, so yours is running at 12 to 13 AFR.
Iam serious ,is 370 torques a lot and are you saying it`s setup to run 14.7 on cruise and 12 ,13afr on acceleration, Think my lambda gauge is miles out.Don`t think there is a substitute of a rolling road for maximum power , a good mapper and then sorting the low down drivability out on the road.
I would recommend Jools all day long . He is one of those who knows what he is doing .
It doesn't tell you what the fuelling is at a steady 60 mph on the M1.
But if you haven't changed anything, go for steady acceleration in fourth gear on an empty road and get a mate to watch your AFR gauge. That way you can calibrate it compared to the RR. Then you can compare how it reads while cruising.
QBee said:
Right. This is a power run, max boot in 4th gear IIRC. Your fuelling at that time (before any remapping you did yourself) was beautifully steady at 0.88 lambda (12.9 AFR), and it only drops to 0.84 lambda (12.3 AFR) at well over 5000 rpm.
It doesn't tell you what the fuelling is at a steady 60 mph on the M1.
But if you haven't changed anything, go for steady acceleration in fourth gear on an empty road and get a mate to watch your AFR gauge. That way you can calibrate it compared to the RR. Then you can compare how it reads while cruising.
No not touched anything .It doesn't tell you what the fuelling is at a steady 60 mph on the M1.
But if you haven't changed anything, go for steady acceleration in fourth gear on an empty road and get a mate to watch your AFR gauge. That way you can calibrate it compared to the RR. Then you can compare how it reads while cruising.
Alexdaredevils said:
Need dyno graph......
For all you none believers (haha) - here is the Dyno graph to prove... It is 3.9 bored out to just over 4ltr, steel rods, forged pistons, 256 cam, race heads and quad 48 dellorto's. As said previously, you could drive it like a pussycat if you wanted to, but plenty there when needed!! 
SILICONEKID343HP said:
QBee said:
Right. This is a power run, max boot in 4th gear IIRC. Your fuelling at that time (before any remapping you did yourself) was beautifully steady at 0.88 lambda (12.9 AFR), and it only drops to 0.84 lambda (12.3 AFR) at well over 5000 rpm.
It doesn't tell you what the fuelling is at a steady 60 mph on the M1.
But if you haven't changed anything, go for steady acceleration in fourth gear on an empty road and get a mate to watch your AFR gauge. That way you can calibrate it compared to the RR. Then you can compare how it reads while cruising.
No not touched anything .It doesn't tell you what the fuelling is at a steady 60 mph on the M1.
But if you haven't changed anything, go for steady acceleration in fourth gear on an empty road and get a mate to watch your AFR gauge. That way you can calibrate it compared to the RR. Then you can compare how it reads while cruising.
Target AFR for catalyst engine - 14.35:1 in closed loop- up to 3400 rpm.Above that as per non cat map.
Non cat map. Idle 13.5:1 or a bit richer to get a smooth idle. Acceleration phase- 12.5:1 Full power steady state 13:1. Light cruise 15.4:1
Hope this helps. So you should find your car running quite lean (AFR 15) on a light cruise. During acceleration it definitely was close to 12.5, as stated by blitzracing.
ctsdave said:
Alexdaredevils said:
Need dyno graph......
For all you none believers (haha) - here is the Dyno graph to prove... It is 3.9 bored out to just over 4ltr, steel rods, forged pistons, 256 cam, race heads and quad 48 dellorto's. As said previously, you could drive it like a pussycat if you wanted to, but plenty there when needed!! 
Seriously though, that's most impressive. Have been thinking about ITB's for some time now, (appreciate you have carb's), just to get that last bit of NA power out, but the dark side of the force(ed induction) is hard to ignore
ctsdave said:
For all you none believers (haha) - here is the Dyno graph to prove... It is 3.9 bored out to just over 4ltr, steel rods, forged pistons, 256 cam, race heads and quad 48 dellorto's. As said previously, you could drive it like a pussycat if you wanted to, but plenty there when needed!!
Superb giant killer 
my kind of motor 
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