skc

Zen Baboon – "Suber"

Notwithstanding the issues which John has had, I have to say I am delighted with the performance of the 8374 EFR on my 2.01ltr IX. At 34psi it is making ~450kw atw peak, with over 300kw atw available at 4200rpm. Good enough for 288kph down Conrod weekend before last. With the right manifold, the extra displacement and exhaust pulse takt from a RB, an 8374 would be ab absolute track monster!!

double post sorry

Yep, Scott will do the tuning. I used to take it back to Qld to get CnJ to tune it, but I just don't have the time these days.

Car was a 2.1ltr using e85. It made 300kw atw by 4200rpm which given the limited refinement or development in the tune is excellent. Will let you know how we go when the tune has been refined and we have leaned on it a little.

Me too. With ~350kg less, it should all come together quiet nicely.

Too many things changed with the chassis to compare lap times sensibly. As well as a complete change in braking package, we added a cage, removed ~75kg nett, changed the track and moved to a custom center diff control unit. To make matters worse, setup time after the build was limited to a half a dozen laps the afternoon before the event and the diff maps were.... uhmmmm... not ideal...

I’ve had a couple of EFR 8374’s on order since late last year, and understand the general frustration expressed by a few in this thread. I finally managed to get my hands on one a week before WTAC to run on my otherwise tarmac-rally spec IX. After reading through all the dire innuendo expressed in this thread, I have to say, we approached tuning the car with some serious reservations. In fact, if time had permitted, I am pretty sure we would have probably reverted to running either my HKS T04z or TS GTX3582 instead. Tuning the car for a few hours the night before the event, it made an easy 424kw atw at 2.0 bar, despite the fact it was tied down with 6 straps and running soft R’s on the rollers. For reference, the same car, on the same rollers, with the same target boost made 417kw atw running the T04z. Although peak power was comparable, what really surprised me was the relative power down low. At 4500rpm the 8374 was making ~70kw atw more power than the T04z, despite the car now running a 0.2ltr less displacement with the new bottom end. We took the car to WTAC and flogged it for three days, and the turbo didn’t miss a beat. Ignoring the numbers, trackside the real benefit from the EFR is throttle response. With the T04z, in some short corners I used to left foot brake and get on the gas early to try and get the turbo spooling and get drive off the apex. Now, with the EFR’s responsiveness, not only is the “left foot spool” redundant, there are a couple of corners where I am short shifting and driving out on the much more lineal torque. We will get back on the rollers later next week and refine the cam timing and balance of tune and then see how it performs at 2.5 bar. My view for what it is worth; product introduction and packaging issues aside, I can’t see why you would run anything else based on what I have seen to date. SK

Both less than 470hp atw.

Steve Cramer Products are the local Ohlins dealer.

I know a club car that has done 39's on R's. Stepping back to roadies shouldn't knock off more than 2-3 seconds.

Thanks Terry. Both bikes were is pretty good nick with no real damage. I will have the serial numbers later today so will post them up. Stephen

Came down to the garage this morning to find that some farker had cut the lock and stolen our mountain bikes. Not happy. If anyone hears of a medium Giant Anthem X and a large anodised red Santa Cruz Superlight with black King hubs, XTR cranks, Juicey brakes please let me know by PM. The bikes were stolen from inner eastern Sydney. If there is somewhere else I should post this, let me know. I’m happy to pay $1000 reward for recovery. SK

^ thanks

Thanks. Do you have and cd v downforce values published?