LOCAL in the USA PDK Upgrades
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What I'm referring to a solution however that keeps the stock ECU. I think running a standalone on this car would be an even larger issue because the factory ECU is so complex and as far as I know, no one has tried on a 997.2 ECU. But props if someone can figure it out.
I agree that a stock ecu would be preferable as well. The above solution would be for fueling using the stock ecu, not for a standalone. AFAIK, this Split Second AIC would be a way to run a oem ecu for additional fueling needs. This is what is used on BMW N54's and N55's that retain stock ecu's, albeit with a back-end flash, piggyback, and Additional Injector Controller for the additional fueling.
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Wish I could! I am not a machinist haha... IMO an idea for the simplest solution would be a throttle body spacer between the plenum and TB with a single or dual ID2000 injectors rather than port injection at each throttle body. I'd definitely see what BBI thinks though! If anyone can do it they can! Just an idea...
Just thinking out lout... a simple throttle body spacer with 1 injector and a split second additional injector controller seems as simple as a secondary fuel injection system can get.
Just thinking out lout... a simple throttle body spacer with 1 injector and a split second additional injector controller seems as simple as a secondary fuel injection system can get.
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The Motiv fuel rail is a good reference tho. Tune the main tune (DI Fueling, Ignition Timing, Cam Timing, Boost) on the stock DME, and then run an external fuel driver for the supplemental fuel injectors. Just need to make sure everything plays nice together so you're not getting an X-Mas tree dash.
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I agree, port injection at each cylinder would be ideal compared to a throttle body plate setup with just 1 injector. However after a careful look, it seems due to space constraints alone it would be hard to fit a plate and injector between the intake manifold and cylinder head without clearance issues between the plenum/manifold and engine compartment. The Y-pipe would be misaligned upwards as well.
Ignoring being more prone to knock and detonation, and by looking at space constraints and simplicity alone, it seemed a single throttle body plate and injector would be an easier solution. If someone could machine up a spacer setup with injectors and rails, I think this could be an interesting direction towards a solution.
Ignoring being more prone to knock and detonation, and by looking at space constraints and simplicity alone, it seemed a single throttle body plate and injector would be an easier solution. If someone could machine up a spacer setup with injectors and rails, I think this could be an interesting direction towards a solution.
The problem with a single injector is equal fuel dispersion to each cylinder. It'd be a pain, but by giving each cylinder and injector you're guaranteeing every cylinder is getting an equal amount of fuel, and avoiding any knock/detonation problems caused by fuel starvation.
As for tuning, if the stock dme takes care of everything else, DI fueling, ignition, etc, and the SS AIC handles only the secondary fueling, I don't see as many tuning hurldles as other options out there.
The Motiv fuel rail is a good reference tho. Tune the main tune (DI Fueling, Ignition Timing, Cam Timing, Boost) on the stock DME, and then run an external fuel driver for the supplemental fuel injectors. Just need to make sure everything plays nice together so you're not getting an X-Mas tree dash.
As for tuning, if the stock dme takes care of everything else, DI fueling, ignition, etc, and the SS AIC handles only the secondary fueling, I don't see as many tuning hurldles as other options out there.
The Motiv fuel rail is a good reference tho. Tune the main tune (DI Fueling, Ignition Timing, Cam Timing, Boost) on the stock DME, and then run an external fuel driver for the supplemental fuel injectors. Just need to make sure everything plays nice together so you're not getting an X-Mas tree dash.
Last edited by dvpouldar26; Oct 22, 2015 at 11:13 PM.
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