only asking people who have an aftermarket plenum or know someone that has one. aftermarket plenums which is better???? how much are they? and has any1 heard of p.e.t mod plenums i would like to know your thoughts?

pet ones a nice as nizpro ones are excellent too you get what you pay for mate

there is plenty to choose from! the pet manifolds seem like a good plenum, not sure what they go for though.

PET - $1500 Nizpro - $1750

Quote: Originally Posted by Petros pet ones a nice as nizpro ones are excellent too you get what you pay for mate thanks everyone for helping me out. then out of pet and nipro which one go for?????

I heard that nizpro don't make them anymore... could be wrong though Some original photos have not been recovered yet.

Quote: Originally Posted by exmotrbo I heard that nizpro don't make them anymore... could be wrong though NNNOOOOOOOOOOOOOOOOOOOOOO I still want one but can;t afford one .... has anyone got a pic or any specs on the PET ones? Some original photos have not been recovered yet.

Here's the pet one Some original photos have not been recovered yet.

thats just a sheet metal cover over a std n/a inlet manifold, modified at the front, seen it at heathcote.

Quote: Originally Posted by ^Mobil_HRT^ Here's the pet one thanks i would love 2 c underneath the cover to c if its casted?? does any1 know if pet ones r casted???

if its cast i'd get one ..... i'm a bit cautious of welded square plenums ...

badbt1, sorry i haven't got any other pics, its actually of a mates car, not mine.

Quote: Originally Posted by ^Mobil_HRT^ badbt1, sorry i haven't got any other pics, its actually of a mates car, not mine. thanks for tha pic dude. i went to p.e.t mod dennis (owner of pet) said that his welded plenums flow 18 percent better on the flow bench then nizpro's casted plenums. can anyone comfirm this????

man i need more pics. ... wanna see what the other side is like ...

why spend $1500 when you can get then for nearly half the price, and they look just as good with the same results. check the site below for workmanship and quality of welds.

have you got an dyno results or flow improvments from them? whats the capacity of the short runner setup yet?

THERE YA GO.... Some original photos have not been recovered yet.

no flow results on the plenums, i will let the dyno do the talking. the long runner plenum increased hp by over 20rwhp with a massive capacity over 10 litres. this was just done to see how big a plenum i could fit in the engine bay and the results. obviously something smaller will increase air pressure in the plenum and subsequently hp further. the short runner plenum is yet to be dynoed. will be a while as the car is at the panel beaters waiting to be repaired after some hail damage. the capacity is similar to what jpc claims on their car, but from what i can see, the thruth is not fully told. they have said "around 7 litres". but if you look at the size, i doubt it and compared to mine, somewhere around to 8 litres sounds about right.

Quote: Originally Posted by exmotrbo I heard that nizpro don't make them anymore... could be wrong though you'd be wrong .... they still make em, they jsut don't have them in stock and only make to order. Their still their orignal price of 1800. Some original photos have not been recovered yet.

For $1800 you would want to see a fair hp gain wouldn't you? Don't sub zero do plenums, they are suppose to be preety good? Mick