As stated in the other thread lets keep all comments in here. Car is off to Surrey rolling road today for Ryan to investigate more.

It would be unfair to comment at this stage. As soon as I have answers I'll post them.

I think that this question is mostly focussing around the knock sensors and whether they can work as well as they can with all the noise from the finger followers.

There was a thread on this originally but someone had it pulled. But at the time the Syvecs people were of the view that the noise generated by the finger followers was at a different frequency than that caused by pinking so wasn't an issue. They set it up on a very old and clattering standard 4.0 and improved the power output and driveability immensely as they could optimise the ignition advance and rely on the sensors to pick up and handle any knocking.

So, in essence we have seen it work brilliantly on a standard 4.0 S6 to the point that it is an extremely viable option for getting more power as it does so while protecting the engine not adding more risk.

But, it has recently been fitted to a 4.5 SS and the first run highlighted pinking in 3 of the 6 cylinders so they had to dial in several degrees of retardation.

The question now is whether there is a fault with the sensors, fault with the engine build or possibly that the bored and stroked engine produces different harmonics that do interfer with the sensors. Hopefully, over the coming weeks this thread can be another interesting learning curve for the S6 community.

Depends when he can start and how long he has the car for

My mapping session compared to a 4.5 T350 (mines the blue line)


Here's a 4.3 mapping session.



just hope this is a coincidence!

Car will be on the rolling road on Tuesday.

Is Power also involved out of interest? I'd imagine with the warranty etc, Dom would want to stay abreast of the situation.

I guess that answers that question - sorry to hear that. Especially after a full-house rebuild went into his back-pocket.

(Sorry if that offends).

You're the one who has just spent £10k +, I would expect the mechanic to be looking at it your way, not his.

I would say though, that if you are being treated like that at this point I would whip out the Syvecs and take him up on the offer to install and map the MBE for free so at least you then have peace of mind that the cars is able to make the numbers guaranteed by the builder. You have to assume that if you have any problems reaching those numbers without this you'll not get very far.

Something to note is Dom still gives his warranty on his rebuilds with syvecs fitted. He doesn't have to. He could monopolize his rebuilds with his own ECU but respects Ryan and his product to still allow this not to infringe his warranty.

I have every confidence in both parties products, Power as an engine builder are well established with great results, Syvecs also as engine tuners, their products are well received and have had great results too outside of TVR too. Unfortunately this is the first time the two have been put together. I'm the experimental piggy in middle! It's already cost me over £1K to be the first to merger these products so if it all works out which I'm sure it will, anyone else who goes this route can buy me a beer