Yeah, I wanted to check how things were going fuelling wise, just for peace of mind really. If things were really up the spout, then I would look into getting the standalone ECU fairly sharpish.
The good news was that the fuelling was pretty much spot on, so no concerns there. And some other good news was that I think the problem with the jerking has been finally figured out!
...About bloody time eh? It looks like I've got an engine mount issue, the one that sits at the back near the gearbox. After a quick test drive, the folks at the RR were fairly certain that's what is causing the jerking. Some Grp N mounts on the list then! 
Here's a pic of the graph I got from the session today. I only grabbed the 1st run unfortunately, so it wasn't quite as high as I'd hoped, mostly due to excessive heat soak, as the car had been on the rollers for about 20 minutes getting the fuelling checked.
On this run, it was just shy of 147 bhp. It's running at around 150 really. It just goes to show how high some other RRs can be. With the likes of Wayne's and Jam Sport for example. The car made 153 bhp just with the 708s on Wayne's rollers, and after the cylinder head, it made 164 bhp on Jam Sport's rollers!
And it's actually running more power since then! I'm happy, as the car is running better now that it ever has... Just in case some people don't know, the mods are:
Catcam 708 camshafts
Gas flowed, big valve head (stage 4 from Hiflowheads)
ECU re-map from Wayne (Chipwizards)
Supersprint 421 manifold
Sorpion exhaust system (no CAT)
Ecosse induction kit with Green filter
Now, the main reason why I've posted in the 'performance' section and not in my progress thread, is because I've got some stuff to discuss. As many of you know, I've been considering KMS's TB package for a while now, so I posed the question to the chaps at the RR place I was at today. One of the chaps there races AXs now I think, but he used to race Peugeots and has a lot of knowledge on the subject for our type of cars. Now, I know I'm going to get totally FLAMED for this comment!
...But here goes! He told me, likewise to what Wayne told me and also all the chaps at TMS... Is that going with a TB setup is a waste of money. His point being that it's simply not worth the money for the little to possibly even NO gain. He went back to what I've commented on in the past, and that's the inlet track length, and also the poor positioning of the bodies. When I asked about the fact that the bodies would allow the use of the higher lift / duration cam shafts, he said that wasn't the case either. As long as you have the management to deal with it, the standard inlet is fine. Head scratching time eh? 
He went on to say that the new Citroen C2R2 cup cars for example, run on the standard inlet, and they reach around 180 BHP... Well, I know this is going to make for some comments from some people.
The good news was that the fuelling was pretty much spot on, so no concerns there. And some other good news was that I think the problem with the jerking has been finally figured out!
...About bloody time eh? It looks like I've got an engine mount issue, the one that sits at the back near the gearbox. After a quick test drive, the folks at the RR were fairly certain that's what is causing the jerking. Some Grp N mounts on the list then! Here's a pic of the graph I got from the session today. I only grabbed the 1st run unfortunately, so it wasn't quite as high as I'd hoped, mostly due to excessive heat soak, as the car had been on the rollers for about 20 minutes getting the fuelling checked.
On this run, it was just shy of 147 bhp. It's running at around 150 really. It just goes to show how high some other RRs can be. With the likes of Wayne's and Jam Sport for example. The car made 153 bhp just with the 708s on Wayne's rollers, and after the cylinder head, it made 164 bhp on Jam Sport's rollers!
And it's actually running more power since then! I'm happy, as the car is running better now that it ever has... Just in case some people don't know, the mods are:Catcam 708 camshafts
Gas flowed, big valve head (stage 4 from Hiflowheads)
ECU re-map from Wayne (Chipwizards)
Supersprint 421 manifold
Sorpion exhaust system (no CAT)
Ecosse induction kit with Green filter
Now, the main reason why I've posted in the 'performance' section and not in my progress thread, is because I've got some stuff to discuss. As many of you know, I've been considering KMS's TB package for a while now, so I posed the question to the chaps at the RR place I was at today. One of the chaps there races AXs now I think, but he used to race Peugeots and has a lot of knowledge on the subject for our type of cars. Now, I know I'm going to get totally FLAMED for this comment!
...But here goes! He told me, likewise to what Wayne told me and also all the chaps at TMS... Is that going with a TB setup is a waste of money. His point being that it's simply not worth the money for the little to possibly even NO gain. He went back to what I've commented on in the past, and that's the inlet track length, and also the poor positioning of the bodies. When I asked about the fact that the bodies would allow the use of the higher lift / duration cam shafts, he said that wasn't the case either. As long as you have the management to deal with it, the standard inlet is fine. Head scratching time eh? He went on to say that the new Citroen C2R2 cup cars for example, run on the standard inlet, and they reach around 180 BHP... Well, I know this is going to make for some comments from some people.
