Had the vts rolling roaded

[bertie]

hi had my vts rolling roaded today cars got a induction kik and a cat back it ran
1st run 128.8@6705 max torque 109.6@5505

2nd run 125.1@6754 max torque 108.5@5391

3rd run 126.7@6833 max torque 109.4 5345

wanted a figure to start with as iam getting cams in december cant wait :y:

[Bake]

Those results sound about spot on to me, what kind of power are you aiming for in the end?

[bullit]

just make sure you stay on the same rr now and youll see all your gains

[bertie]

Aiming for 150-160bhp gonna get a decat, manifold,cams and pulleys and a dastex unichip, i will b sticking to 1 rolling road we dont have 1 round here for miles!

[b0t13]

what filter and exhaust u got?

[bertie]

got a carbon enclosed one from halfords and i bought a cat back exhaust from ebay think its a scorpion 3"5 rolled in

[Toad]

Max torque was a little high in the revs IMO. Should be around 5200...

[bertie]

Toad - What do you mean? I'm only goin by what was printed out on my graph.

[Noddy]

Saxos IIRC are rev limited to around 5200 in 5th gear - thats whats he's refering to. Hence the question as to why it was doing an extra 1k rpm

(or i've completely mis-interpreted the whole thing :(:()

[bertie]

ah i see just looked on me dynamometer report and it says that it only used 4 gears

[Noddy]

There you are then... Thats why :y:

[dannygti]

Saxos IIRC are rev limited to around 5200 in 5th gear - thats whats he's refering to. Hence the question as to why it was doing an extra 1k rpm

(or i've completely mis-interpreted the whole thing :(:()

you have mis-interpreted the whole thing.the vts revs to 7250rpm(standard) in any gear.

most rolling roads test in fourth gear but some have to do it in third because the ratios of the car may give a too high a top speed.

[Noddy]

Like I said in another thread - Sundays = stupid day for me :( - I'm going to work :(

[jimbo06]

yeh those figures sound about right, well done mate

[bertie]

thanks :y:

[Toad]

It shouldn't make much difference doing it in different gears. You will find that the high gears will tend to give you a higher flywheel figure, whereas the lower gears will give you a higher wheel figure.

Bertie, I'm not too sure how else to explain it. The VTS should produce its maximum torque at 5200 rpm. Unless you have changed the characteristics of the engine, I woludn't expect it to stray from there by much at all. I suppose an exhaust sytem could affect it a little, but not by much. The first reading is not right at all. It may have been a little spike or something. Check the graph for the first reading, you might see a little spike for the torque where it's been suggested that it's at its maximum.

The power figures are good, and quite realistic. Notice the torque reading. The engine as standard, produces 107 lb/ft of torque, so thats pretty much spot on. Just where it's actually producing it doesn't seem quite right. To put things into perspective, I have different cam shafts to you, I'm using Catcam 708s, which move the power band up in the rev range a fair bit. I produce my maximum torque at around 5500 rpm now, as opposed to 5200.