sdbutler10 said:
Good to see that the power is up and torque last longer near the end of the rev rage 😃
Yes, you could feel it when driving, seemed to pull harder to the redline quite nicely.
chris_uk said:
the lines on the graph do look nicer above 4k.
i wonder what the down pipe and sports cat will do to increase that 5bhp gain 🙂. i am going to have to find somewhere that can make a u-bend tho..
With the sports cat and downpipe fitted i would expect a much better gain. At the moment all we have done is moved the restriction to the next part of the system, the pre cat and cat. I would expect you would need a new rear box to go with the 2.5" U-Bend as the bend radius would put the end in a different place 🙂
techieboy said:
May have missed it but how much is the VX220 2.5" downpipe and is it available on it's own? cheers..
Yes it is. The cost will be around £535.00 + vat.
exmantaa said:
Hmmmmm.
Not getting very excited about those curves... Top end is nice (for my SC), but I did hope the NA torque gap would also be filled in a bit. You probably you need a longer 4-2-1 for that.
I hope this manifold is seriously held back by the crappy standard downpipe (precat removed I do assume?) and maybe also the inlet on this z22se. notsure.gif
Yes, a longer 4-2-1 would give the results you are looking for. This is only a stumpy manifold to replace the standard item so we were very limited on space. Also as you said, this was used on a car with the standard downpipe fitted, pre cat and main cat.
vocky said:
a good power gain for a single mod, exactly what I expected it would give, the downpipe should also free a similar amount :thumbup:
certainly the manifold will work better with cams and a 2.4 inlet manifold 🙂
the standard cast manifold is just plain rubbish for bhp, well done Piper, another fine piece of engineering 8)
For anyone considering tuning their z22se this manifold should be high on your list of first mods, it's worth doing before fitting cams, but after removing the precat in the list of "must do's" 🙂
Cheers Vocky. Its what we were expecting also given the space avaliable 🙂 To be fair the standard item was not to bad for flow rates compared to alot of other stuff we have seen 🙂 Just wish i had time to do another run with our downpipe fitted 🙁
chris_uk said:
i hope to see 10 bhp from the manifold, downpipe, sports cat, 2.5 u-bend (when vocky makes me one, i mean when i find someone to do it ;P) and the vse.
Sounds about right. But dont forget about all that torque loss because your insistant about fitting a system that is too big 😉
Matte said:
Thanx :thumbup:
I think the figures look promising. Guess that it is without tuning the ECU. If that would be done I'm sure it will be alot more bhp showo..
Correct, the ECU was not touched. Purely a manifold change and back to back power runs.
vocky said:
good point, the ecu will need 30 miles to adjust to the new manifold, a remap should give even more bhp 🙂
Really? Buggar, should have driven around more and put some miles on before putting it on the rollers. Doh! Might have got an even bigger gain 🙂
bazzio said:
garry any tips on fitting the manifold????
Sadly not really. We have ramps here and alot of the work was done from underneath. I dont think it was too bad a job to do so any good garage should be able to fit it for you.
exmantaa said:
Maybe I missed this, but what size primaries is used?
And as suggested earlier, is a flange without the EGR cut-out possible?
Any pic of inside the collector? (curious if a "velocity cone" is fitted between the 4 pipes)
The primarys are 1 5/8" diameter (or 41.275mm).
We have already had the flanges made so cannot offer a manifold that is totally blocked off. Here is a picture of our flange. Also i have a picture of the inside of the collector for you. I have no idea what a "Velocity cone is tho so you will have to let me know what that is, lol.
I hope this answers all your questions 🙂
Kind Regards
Garry Curley
Race Product Development Dept
