Most of the standard 180s' I've seen figures for only make around 170lbft

Shroon

Last time I was on the rollers [I] only made 170BHP with 177lbft lol

Shroon

they throw up all sorts of figure's. if you were to put 10 zs 180's in a drag race id put my car on then all finishing very very closely. there wouldnt be anything noticable in it

V true.
The tuner who did my roller test then took my car out to feel the flat area it showed on the rollers.
He said it went really well lol (she made 170 @ around 6,000 then no more lol)

Shroon

my 180 is roughly 16 bhp better than standard, puts out the same torque as standard. its very slightly quicker, but wont make a much of a difference in the real world, if any.
IMHO my mods have improved the acceleration a tiny amount bit but the noise level's a huge amount!!!

if your worried about how well your 180 goes, the best thing to do is to keep the plenum in good working order

What I found strange was Ric's torque and power curve, not one I have seen before, very odd with blips all over the range. The torque curve being the one that baffled me. Without a doubt the whole plenum design/mechanism and vis valve build quality makes a huge difference to the final figures and delivery. There is no consistency here which makes it very difficult to set a benchmark.

Ric's plenum was replaced Sunday morning, this was brand new and came complete with brand new power and balance vis units, brand new throttle body, pots and IACV. However it showed a healthy jump in output from 177 but I was surprised that it was low to start with considering it had an ITG, decat and custom rear silencer. I would have expected to see at least 185-190 with the ecu 'learning' these mods as best it can. Mine started with 190 before topping at 200 after mapping.

This only underlines what I said earlier in that there is no consistency in the build quality and it always comes back to the plenum and vis system which dictates the torque figures and eventual power delivery. If the torque dips early and takes time to recover then this will have an effect on the final power figure before it tails off towards the redline area.

If the balance valve operation can be tweaked then I'm sure there is scope for improving the torque curve therefore ramping up the power albeit slightly. For those running standard cams I think we are chasing that last 5bhp and at the mercy of build quality. Those running cams will benefit from the longer duration and another 10-12bhp at slightly higher revs where most people wouldn't probably notice or even take their car.

i personally think untill such time a new plenum is designed we are all going to see inconsistant power and torque figures. as mick underlines no plenum seems to be the same, they seem to have left the factory with inconsistant figures, and this seems to be showing on the rollers, and final in the figures after a re-map. untill a plenum is designed that will give a 180 a consistant power and torque figure this will always be an issue and a talking point. it also puts a big bold line under how bad the origional/standard plenum really is

http://i63.photobucket.com/albums/h1...9/KV6graph.jpg

Is the official ZS180 power graph

Shroon

do you have any more?? a more detailed one? maybe my plenum isnt so fooked as mine is very similar to that?? just with higher numbers

http://i63.photobucket.com/albums/h1...2Nov172236.jpg

All the MGR graphs as OE;)

Shtroon