DEZERTE

Would it be possible to remove the airpump on an S5 and then re-route the actuator lines to after the supercharger (eaton m90) so the ports open that way? I heard the only use for the airpump was to open the 5/6th ports (on the s5)
Correct me or whatever..comments.. etc.

DEZERTE

bump

ddub

Forget that... just remove the actuators/rods/sleeves from the 5th and 6th ports, and plug the hole with a bolt or something. That will be like wiring them open except with no sleeves, so less restrictive. When running forced induction you dont need the actuators anyways, I mean, I took mine out with no boost, and it helped my top end a bunch.

DEZERTE

oh ok, so removing the airpump on an S5 is safe right? i mean aside emissions the only real purpose it serves is the 5/6ths?

drago86

leave the sleeves in youll get better low end.

SonicRaT

iTrader: (6)

Well, you can remove it and rip the cat off, and then use the VDI off the supercharger, however people are going to argue it'll serve no purpose. The same goes for the 6th ports, most will claim that the supercharger will make up for the loss. Who knows, it's up for experimentation to figure that out. Yes, you can hook them up to any vac/boost source after the TB, along with the VDI, this should open them both up at the same time. Or, you can just plumb the S/C pressure to the solenoids and use the solenoids to activate them at their ECU specified times.

DEZERTE

I have no cat... I dont understand why dont I just remove the 5th and 6th ports all together. Why do the T2's not even have them. Well. I dont know. im tired right now

SonicRaT

iTrader: (6)

Simply because there wasn't a need. The N/A's used them to take advantage of low-end torque with having less flow, then opening them to increase flow at higher RPM's, whereas the turbo didn't need to worry about that, it had 4 large ports that it just stuffed air down.

ddub

Just remove them... A mildly modded n/a can see gains from removing them, so adding boost is a definite go ahead to ripping them out. And take the sleeves out too, dont leave them in there, they will not "provide better flow." Have you looked at them? They suck for flow, thats why pineapple racing has inserts for them. When taking out the actuators and everything, the sleeves aren't needed.

TII's dont need them, simple as that

By the way. You live in Seattle huh? No cat? What do you do about emissions by chance? I have to pass by Sept now because of the fking metro law that just went to affect where you can't register under po boxes anymore.

pyrojunkie

When air is being forced in the 5th and 6th ports are not needed. In fact, with boosting, I don't think there is any power difference with them open or closed. If that is really the case it would make more sense just to remove all the 5th/6th port stuff.

Also with supercharger build boost so quickly, using that pressure would virtually keep the ports open all the time anyways.

DEZERTE

Ok, so its safe to remove my air pump since the only thing besides emissions that its responsible for is the 5th and 6th ports? My test pipe wont become red hot and melt or anything..?

DEZERTE

I now live in walla walla.. 5 hour drive from seattle..I dont have emissions here , there is no way my car would pass now.. Try the cheating emissions thing, i think its in the FAQ or something.

SonicRaT

iTrader: (6)

I don't mean to sound like an *** or anything, but are you sure you're capable of taking on the supercharging project?

pyrojunkie

An airpump is designed to make the cat run hotter thus more efficiently. A cat can get red hot because of the restrictions it imposes, but a test pipe is all free flow. It won't likely melt unless you switch fuel types to nitromethane or methanol

Also because you run the test pipe you are more likely to see flames from your exhaust.