Thursday, February 10, 2011

Dyno chart and Header experiments!

Boy it has been quite a long time since my last post. Been quite busy with work and travels and also with my family. Not easy finding time nowadays!
Well first up would be my dyno chart, should have posted it up a long time ago but havent got the chance. This was done after I have changed to a full 2.5in exhaust setup with straight pipe and rear muffler from Tonnka. All of the work was carried out by the main man of Tonnka himself and I must give my hats off to their work and quality of stuff they manufacture!! Also running water/methanol injection during this run.
As you can see from the chart above, I am very very pleased with the results. My only gripe is to smoothen the mid range to remove the 'W' in the mid range. To date I have also experimented with a different header configuration (4-2-1), very long primary, tri-y design which was custom made by Tonnka. Although this improved the mid range by a whopping +16whp, I lost quite a bit on the top end about -10whp. So I went back to the previous header which is a 4-1 style from Formworks. I have a new header from Tonnka which I have yet to try, let see how much it helps.

Tonnka Special for 4G93

Close up of the header.

Looks more like turbo header

Taken out after dyno- note color change after just 1 hour on the dyno

I have also got SP in the track at last and least to say I am still learning its new power delivery and also mastering all the gadgets on SP. Whats coming up, a revised brake setup and a new look! Watch this space!