I've finally managed a track day with the diffuser installed, and the car is definitely more stable at speed. BIR has a 5200' (almost one mile) front straight and my speeds were breaking 145 mph. The car seems to accellerate more easily at speeds above 100 mph, and in the high speed corners (90+ mph) the rear end felt a bit more planted. Braking at 145+ was a bit less unsetteling to the car, also.

I'm definitely happy with the rear diffuser.

 

So what were your lap times with and without the diffuser and how fast could you get on the front straight without the diffuser?

 

To be accurate I didn't do any "with & without" testing on that day.

Top speeds were only a couple of mph higher, but last time I was at BIR I was running with all the windows closed in 45 to 50 degree weather, this time I was running with the front windows down in 85 degree weather. I also had a passenger every time I went out this time and was generally passengerless the last time.

I did try to do a lap with the windows up, but ended up dropping them about 1/2 way around - I didn't want to risk having sweat in my eyes at 150 mph.

 

Wear a headband ...



l8r)

 

 

are these still available? didn't see them on the web site.

 

Of course! And they are in stock too. Website needs serious updating

 

Do you have this for the standard exhaust yet?

 

would this product fit with a Helix exhaust?

 

I want to know that too

 

How Bout you do a test fit for us??

 

All you have to do is slightly bend the muffler tray around the muffler if the exhaust line comes straight back like the Vishnu signiture or standard exhausts. It's thin aluminum and bends easily.

It won't look perfect though, but will still work.

If the Helix comes under the gas tank, you might have an issue.

 

Hook it up mate Am I allowed to ... ahem ... Dremel it? Gimme a shout anyway - you gots my number.