Jeffbucc

Fun was had today.

Braineack

iTrader: (62)

are you doing pulls in 2nd gear on the dyno?

Jeffbucc

4th gear.

concealer404

iTrader: (3)

That might explain the difference.

Jeffbucc

In....what exactly. The unexpectedly high figures or the delay in power?

(Remember I'm knew to all this)

aidandj

iTrader: (5)

6 speed?

If so lower gear ratio so maybe less spool.

Jeffbucc

6 speed with 3.63 R&P

concealer404

iTrader: (3)

You weren't in the 1:1 gear, Ed was.

I'm fuzzy on how the final drive affects things on the dyno, but i do know that every time i've been on the dyno, the operator ignores the final drive and sticks it in the 1:1 gear.

thenuge26

iTrader: (2)

AFAIK 1:1 gear means the input shaft is directly connected to the output shaft, therefore no losses from the countershaft.

Also from BBundy and others we know that 4th gear is one of if not the weakest in the 6 speed (or at least the most likely to break out on track).

curly

iTrader: (25)

Yeah, I wouldn't suggest a bunch of 4th gear 6-speed dyno pulls with a high powered car. But afaik, 5th would only make the graph look better.

Braineack

iTrader: (62)

that second pull in the video is 4th gear? gets to redline in like 3 seconds.

concealer404

iTrader: (3)

I could see it if the dyno wasn't loading up like... at all. But that pull is exactly why his graph looks the way it does.

hornetball

iTrader: (4)

Brain's talking about Jeff's video, not his dyno graph.

soviet

iTrader: (10)

needs more drama!

concealer404

iTrader: (3)

Yep i know. Jeff made it sound like the "second pull," which was the 3 second wonder, is what generated his 20psi graph.

If that's the case, the graph doesn't surprise me in the slightest.

Jeffbucc

I'll go over the videos later, but I am 100% sure all pulls done on the graph were in 4th gear.

Maybe I just picked an AFR tuning clip and mistook it for the 4th gear pull in my tired state.
I can understand your confusion but I have no reason to lie as I have nothing to prove/nor care to prove beyond my own enjoyment driving the car. Anything I post in the thread is just my enthusiasm for having fun with this thing.

turbofan

iTrader: (1)

Edit: Dur I should have read ALL the responses. So the answer to my ninja-edited question is maybe.

Although would it make a difference that mine was 5th gear with 4.10 rear end and his was 4th gear but with 3.63 rear end?

Chiburbian

iTrader: (1)

^^ good point. There is about a 12mph difference at 6800rpm between 4th (3.6 gears) and 5th (4.1 gears) though. That IS something.

Savington

iTrader: (31)

+1. I seriously doubt that dyno chart is accurate, because if it is, that's the worst performing EFR I've ever seen. There's no way dynoing in 4th vs 5th will fix it, either. I wish you were closer to a Dynojet or a Dynapack.

Jeffbucc

Hmmm I'm interested in what a different Dyno would report then. It certainly doesn't feel like it spools that late/delivers power that slowly.

What are the right questions to ask the tuner to find the answers we are obviously lacking?

Could my EBC to EWG routing have affected the spool?

If it was truly that slow on power you'd think I'd be able to feel it compared to my 2860rs turbo.