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Has anyone install the down draft injection A.K.A Stacks on a LS1. My ? Is Does it need a separate wiring harness or will the Stock ECU run it
i have a 2002 LS1 from a WS6 in m1970 Chevy PU. I want to run Stacks, can I install and run or do I need separate wiring and a retune on the Dyno
Has anyone install the down draft injection A.K.A Stacks on a LS1. My ? Is Does it need a separate wiring harness or will the Stock ECU run it
i have a 2002 LS1 from a WS6 in m1970 Chevy PU. I want to run Stacks, can I install and run or do I need separate wiring and a retune on the Dyno
I'd bet as long as you can get a TPS to work, it should run.
ITBs would absolutely require a retune. Also, you have to figure out a way to control idle air, as well as having to know how to synchronize them. The stock computer will be able to do what you need for tuning, but only after you figure out the mechanical issues. If you get something cheap like speedmaster, there will be LOTS of mechanical issues.
Pretty much need an aftermarket ECU to get it going decently. Don't need an expensive one. I run the MegaSquirt 3 on mine. It works well with an ALPHA-N and MAP based "hybrid tune". Which happens to be an option on the megasquirt software. The issue is getting enough resolution at minor throttle inputs so that it doesn't drive goofy. WOT and idle are easy. I'm still working on mine but its good enough to cruise all over town, to and from work and on the high way.
I milled a stock set of small chamber 706 heads .100 and fly cut the stock pistons to end up with a 13.2:1 JY 5.3 setup on E85. Did it mainly for the sound. Performance isn't what I'd call stellar, likely better with a stock intake manifold. But its not bad and it super fun to drive with the manual trans and light weight chassis. Get comments on it everywhere I go.
Eight Stack with 65mm butterflies that I make.
First Dyno @ 600HP, LS-1 and medium size camshaft (232/240) .580"/.564" 346 CID Panteraefi@gmail.com (951-789-2993)
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Pretty much need an aftermarket ECU to get it going decently. Don't need an expensive one. I run the MegaSquirt 3 on mine. It works well with an ALPHA-N and MAP based "hybrid tune". Which happens to be an option on the megasquirt software. The issue is getting enough resolution at minor throttle inputs so that it doesn't drive goofy. WOT and idle are easy. I'm still working on mine but its good enough to cruise all over town, to and from work and on the high way.
I milled a stock set of small chamber 706 heads .100 and fly cut the stock pistons to end up with a 13.2:1 JY 5.3 setup on E85. Did it mainly for the sound. Performance isn't what I'd call stellar, likely better with a stock intake manifold. But its not bad and it super fun to drive with the manual trans and light weight chassis. Get comments on it everywhere I go.
Some of the p01 operating systems have an "sd enhanced" OS option with HPtuners that allows an Alpha N modifier, so you can run a blended tune for huge cams. However, with the OP's stock motor, I doubt this would be an issue at all.
This "kit" has each runner vac referenced into a somewhat large common plenum chamber to get what was suppose to be a "good" map signal. It wasn't. I tried a cheaper ACE's Ecu initially. It did not have the blended table options and it ran horribly. It would idle and go WOT no problem, but the drive ability was crazy bad. I pulled the aces kit and put it on a friends car and it runs great. I think it would be a battle with a stock ECU for sure. I'm still fighting it, even with all the bells and whistles on the Megasquirt 3 at my disposal.
This "kit" has each runner vac referenced into a somewhat large common plenum chamber to get what was suppose to be a "good" map signal. It wasn't. I tried a cheaper ACE's Ecu initially. It did not have the blended table options and it ran horribly. It would idle and go WOT no problem, but the drive ability was crazy bad. I pulled the aces kit and put it on a friends car and it runs great. I think it would be a battle with a stock ECU for sure. I'm still fighting it, even with all the bells and whistles on the Megasquirt 3 at my disposal.
There is a good reason most motorcycle ITB setups are alpha-n, although they have been adding map sensors as a modifier for a long time now. Then again, most v8 engines are not cammed for 15,000rpm, lol.
This has been a project in the back of my mind for a long time. Can't beat the sound and response of ITBs. I bought a Speedmaster Kit 5 years ago with the intent of putting it on a C5 Vette but ended up scrapping the project and selling them.
Is the typical setup DBC? Has anyone tried using a DBW throttle body modified to pull a bellcrank, in a car that is native DBW? Like this:
This has been a project in the back of my mind for a long time. Can't beat the sound and response of ITBs. I bought a Speedmaster Kit 5 years ago with the intent of putting it on a C5 Vette but ended up scrapping the project and selling them.
Is the typical setup DBC? Has anyone tried using a DBW throttle body modified to pull a bellcrank, in a car that is native DBW? Like this: https://www.youtube.com/watch?v=VBjgk3kScts
Any kits out there that are "relatively" affordable while not needing total re-engineering out of the box? I found this while surfing around...
Drive by wire wouldn't be an issue, There have been a few builds where they took apart a DBW throttle body and used the motor and shaft to turn open the butterflies via a linkage and it looked better than the setup in the video
That's one option I'm looking at for my Bugcatcher setup on my current build because they have three butterflies and allow so much air with just a small crack of the throttle it makes the car jumpy and driving in rain would be dangerous. I'll either use a Terminator Max ecu or a Dominator, Either one should work. They would allow you to slow initial throttle blade movement but still allow full throttle and 100% TPS.
I also have a ITB project that I'll run with a Holley system. It makes tuning so much easier, Someone mentioned that tuning ITB's might be an issue. The biggest issue is that they need a common plenum to read MAP, I have an Inglese setup that has a common plenum built in the bottom of the intake. synchronizing ITB's is actually pretty simple. It just takes a little time but just about anyone can do it as long as they stick to the procedure.
Here are some pictures of my projects - Street legal sprint car and my 35 Ford Five Window.
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Down Draft Injection - Stacks 
