Right
All the results are now in 🙂
Been to the rolling road (this time with my camera) and have some video and results for you all to look/listen too.
Firstly, lets look over the sound.
<u>Piper Manifold + Piper 2.5" Downpipe/Sports Cat + Standard U Bend + VSE rear box.</u>
3000rpm = 102/103 db
4500rpm = 116 db
<u>Piper Manifold + Piper 2.5" Downpipe/Sports Cat + Piper 2.5" Cat back.</u>
3000rpm = 92 db
4500rpm = 98 db
And here they are:
https://www.youtube.com/watch?v=6AaJFD_UP5Ehttp
://www.youtube.com/watch?v=iZsvMyf3aRM
VSE - Left Hand
Piper 2.5" - Right Hand
Now the rolling road results.
1) Standard Manifold - Standard Downpipe/Cat - VSE Rear box - DONE 145.8 BHP
2) Piper Manifold - Standard Downpipe/Cat - VSE Rear Box - DONE 150.1 BHP
3) Piper Manifold - Piper Downpipe/Cat (2.5") - VSE Rear Box - DONE 159.8 BHP
4) Piper Manifold - Piper Downpipe/Cat (2.5") - Piper Cat Back (2.5") - DONE 156.3 BHP
As you can see we have got some good gains. Now the eagle eyed amung you will spot the the one that gave the best peak BHP was the VSE. Now this is exactly what i was expecting, given how loud it was it was clear the silencer was not working thus allowing the gases to pass unrestricted. This also backs up my previous comments about matching the right size bore to the engine spec. The VSE is 2" bore so suited to a stock engine (as this car has). Our 2.5" system will really come into its own when you start modifying the engine further, cams, 2.4 Inlet, remap etc.... A suprise to me tho was that our 2.5" system gave the most torque in the middle from 3000 - 5000 with the VSE giving the least.
Anyhoo, here is the graph for you all to analyse yourselves 🙂
[img]
https://www.youtube.com/watch?v=lsaCszC_EAU
On another note, we are working on getting the EML light to stay off. We have spaced the lambda sensor out now but if anything, it has made the light come on quicker? Does anyone know how far out the lambda sensor should be spaced to eliminate this problem and we can try that.
Well, i think that covers everything.
Let me know what you think.
Kind Regards
Garry Curley
Race Product Development Dept
