sids
20+ Year Contributor
- 386
- 0
- Jun 24, 2002
Been going through the archives and posts here, i think I went as far as number 10
From research here's what I gather:
1. installing a FMIC will make your car slower. why? since intercoolers intself are a restriction in air flow and of course there will be a pressure drop. But the pressure drop I assume is constant, say 1.5 psi, so if the boost gauge is hooked up before the IC (which is not the right way to do it) and the reading is say 16psi, the actual boost pressure reaching the manifold is 14.5 psi. What is the pressure drop for the stock sidemount? if the drop is not that much say 0.5 psi, there should be no problems in drivability or throttle response.
2. since you have less boost reaching the manifold, one poster here suggested that all one has to do is to turn up the peak boost to regain the lost pressure, which does make sense because FMICs do allow you to run higher boost because they can cool the intake charge more than the stock sidemount.
3. By slower, I assume it mean overall top end slower, because when going from a standing start, turbos don;t provide all of their maximum boost ASAP, but it would build up exponentially, 2psi at 3000rpm, 4 psi at 4000 rpm..... so with a stock turbo, less top end power is available but with the benefit of an increased safety margin against hot intake charges and detonation.
reason for all this is that am planning a FMIC on a stock turbo, I'm more paranoid about hot intake temps than top end grunt since the weather here is freaking hot all the time everytime. Plus i get the added side benefit of looking good
From research here's what I gather:
1. installing a FMIC will make your car slower. why? since intercoolers intself are a restriction in air flow and of course there will be a pressure drop. But the pressure drop I assume is constant, say 1.5 psi, so if the boost gauge is hooked up before the IC (which is not the right way to do it) and the reading is say 16psi, the actual boost pressure reaching the manifold is 14.5 psi. What is the pressure drop for the stock sidemount? if the drop is not that much say 0.5 psi, there should be no problems in drivability or throttle response.
2. since you have less boost reaching the manifold, one poster here suggested that all one has to do is to turn up the peak boost to regain the lost pressure, which does make sense because FMICs do allow you to run higher boost because they can cool the intake charge more than the stock sidemount.
3. By slower, I assume it mean overall top end slower, because when going from a standing start, turbos don;t provide all of their maximum boost ASAP, but it would build up exponentially, 2psi at 3000rpm, 4 psi at 4000 rpm..... so with a stock turbo, less top end power is available but with the benefit of an increased safety margin against hot intake charges and detonation.
reason for all this is that am planning a FMIC on a stock turbo, I'm more paranoid about hot intake temps than top end grunt since the weather here is freaking hot all the time everytime. Plus i get the added side benefit of looking good
