S4 NA build; second opinion request
#1
S4 NA build; second opinion request
A rough outline of the planned (re)build;
S4 NA 13B, all original parts w/ new front iron
Streetport or small bridgeport
Stock or T2 injectors (primary/secondary/all)
Functional 6PI
RTek stage 2 ECU upgrade
RB header
Port-matched & polished intake
Now, i've put a fair deal of thought into this build already, but I crave some feedback / naysayers. Just to test my theories with/against to make sure I haven't overlooked something critical. Any input would be greatly appreciated!
S4 NA 13B, all original parts w/ new front iron
Streetport or small bridgeport
Stock or T2 injectors (primary/secondary/all)
Functional 6PI
RTek stage 2 ECU upgrade
RB header
Port-matched & polished intake
Now, i've put a fair deal of thought into this build already, but I crave some feedback / naysayers. Just to test my theories with/against to make sure I haven't overlooked something critical. Any input would be greatly appreciated!
#3
Edit: If rotor-swap, the original S4 NArotors would be a good thing to store for later turbo applications? Or were those the S4/S5 turbo rotors? Additionally; would RX8 rotors be an option compression-wise? They're lighter right?
Last edited by Mazdarian; 01-27-16 at 01:30 AM.
#4
MECP Certified Installer
The S5 6PI system controlled by the computer and uses air from the air pump. If you use the S5 manifold, you'll need to use an RPM switch and extra emissions solenoid. It's not plug and play.
#5
While on that topic; I've noticed the RTek 2.0 for the S4 doesn't support 6PI/VDI control. There is - however - the possibility of adding one or two RPM-triggered functions. Could something be made to operate the S4's solenoid-switched vacuum operated 6PI from these programmable functions?
thanks for the replies!
#7
Rotary Enthusiast
A rough outline of the planned (re)build;
S4 NA 13B, all original parts w/ new front iron
Streetport or small bridgeport
Stock or T2 injectors (primary/secondary/all)
Functional 6PI
RTek stage 2 ECU upgrade
RB header
Port-matched & polished intake
Now, i've put a fair deal of thought into this build already, but I crave some feedback / naysayers. Just to test my theories with/against to make sure I haven't overlooked something critical. Any input would be greatly appreciated!
S4 NA 13B, all original parts w/ new front iron
Streetport or small bridgeport
Stock or T2 injectors (primary/secondary/all)
Functional 6PI
RTek stage 2 ECU upgrade
RB header
Port-matched & polished intake
Now, i've put a fair deal of thought into this build already, but I crave some feedback / naysayers. Just to test my theories with/against to make sure I haven't overlooked something critical. Any input would be greatly appreciated!
If you're on a budget, I'd say stick with the parts you have and get a light weight flywheel. Even the lightweight steel flywheel from around $300 US is better than the stock. Best money you'll ever spend to wake up a non-turbo.
Don't waste money on the turbo injectors. You will never run out of fuel with the stock injectors on a non-turbo. If by some miracle you did run out of fuel, a Turbo II fuel pump would be cheaper.
-Jeff
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#8
Rotors still spinning
iTrader: (1)
With your list, I'd eliminate the bridgeport thought. Streetport only. As far as injectors go, you've got more than enough. Your fuel pump is fine too. The recommendation about the flywheel is a good one. It has always been my favorite must do mod. Well, that and a header. If your motor needs to be rebuilt, as in it's about to die, go ahead and do a port job. If your motor is fine, spend your money elsewhere first.
#9
This sh*t burns oil!
iTrader: (7)
Yeah my bad. You see, the thing is; mine's a Euro FC so the 6PI is the butterfly-valve system with the actuators connected through a vacuum solenoid to the intake manifold.
While on that topic; I've noticed the RTek 2.0 for the S4 doesn't support 6PI/VDI control. There is - however - the possibility of adding one or two RPM-triggered functions. Could something be made to operate the S4's solenoid-switched vacuum operated 6PI from these programmable functions?
thanks for the replies!
While on that topic; I've noticed the RTek 2.0 for the S4 doesn't support 6PI/VDI control. There is - however - the possibility of adding one or two RPM-triggered functions. Could something be made to operate the S4's solenoid-switched vacuum operated 6PI from these programmable functions?
thanks for the replies!
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