98+ 5S-FE picture thread., Might be of interest to you if planning to go EMS. Options

[Syaoran]

with all the work put into the bottom end of this motor, your really gonna wish you had put cams in it.
just look at my dynos before i added the cams, and how power falls off above 5k. modern ignition, and all that aint gonna make a lick of diffrence there, its all about flow, and for that your gonna wanna do cams.
trust me, cams make a HUGE diffrence above 5k, where the 5s needs it most.

I know, I will do cams. I know it's easier to do them with the engine off rather than on the car. However my current budget dictates that cams aren't a priority right now.

I'm not gonna drop in cams yet, since I'm going to drop them in along with a shorter and larger plenum'd IM with probably a 60-65mm I.D. throttle body, to REALLY make a difference above 5K.

The rods are there for future upgrades which is the same reason why I over-bored the engine when in reality it wasn't necessary.

Hopefully depending on how my amateur build (with professional assistance here and there) I'll get cams sooner than later.

By the way, the modern ignition won't net me any more power than the stock distributor does at the power level I'm shooting for first, but the sequential injection DOES make a REALLY huge improvement in terms power over batch-fire, and there's a lot of power to be had as well through proper timing control in the higher RPMs.

The physics don't change with an ECU that's for sure, but there's a lot more variables to power than just "ir flow. Air flow does have a more impacting effect on power than anything else does, since air, fuel and ignition are required to make power. I will have the best of the two latter, and will improve on the former later down the road.

[presure2]

agreed, 100%.
that was one of the advantages i had, having a cali emmisions ecu when i had the 5sfte, all cali emmisions 94-6 were full sequential injection, VS the federal ECU that is batch.
i cant wait to see your project up and running, its a major evolution of what i wanted to do with my setup, so im really excited for you!

[Syaoran]

Thanks for the kind words. Hoping to finish this soon and get it on the road.

[6strngs]

Updates?

[Syaoran]

Updates in relation to my car are in my build thread. As for this, everything is working flawlessly and as I hoped for on Megasquirt3/Extra.

Using the crank trigger wheel (36-2) with OEM sensor, cam sprocket with a single tooth and OEM cam sensor (same kind of VR sensor as the crank trigger sensor), using the twin coils running on wasted spark.

This car has never performed smoother. It idles even up to 19.2 AFR without dying at almost 650 RPM, so the sequential injection is definitely doing its job right. Right now it's running N/A, soon to be turbo'd.