Need help with trany types for DOHC 3.4

[Smittro]

"Note: the knock sensing feedback system has been tested on the bench, but not in a vehicle. Do not use this system except for experimental purposes. Test your setting on the bench first."

you're serious? you're going to try and run a TT LQ1 on an unproven system that only has 12X12 Fuel and Spark Tables? say goodbye to whatever work you put into it, because you're either going to kill the motor, or never see the full benefit of it.

here are some examples from VERY well documented GM ECUs

Really? Then how are stand alones used on engines not equiped with a knock sensors? Also this is'nt a drag car I'm building. My goal is in the lower boost ranges. I'm only looking @ a target FWHP of 325-375.. The megaII is fully expandable aswell I can purchase a seperate board for operating a knock sensor if need be and hard wire that to the megaII then create a seperate set of perameters to control knock.. Quite frankly I'm breaking new ground with a TDCTT so the whole thing is an experimental project.. When the cards are down it will go or it will blow. I can always start over with another motor cant make an omlet without busting a few eggs so to speak. I'm not trying to be a d*&k but I'm not a youngster with a limited cash flow..The main idea here is to come up with a basic system that works and can be expanded later for use with other types of TDC apps. I've taken known implimentations (tried and true) off the table, your taking about things that have already been done. Though I respect where you're comming from. However i'm comming @ it from a totaly different view point.

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[robertisaar]

they have to rely on plug cuts alone and hope that their tuning is good enough from one day to the next to either not lose efficiency or for the motor to start knocking when they aren't checking it.

and 325WHP is around 360-370Crank with a manual. with an auto it would be around 380-390.

and especially with boost, you are always going to need to make sure that knock is not happening, because if it starts happening under boost, it can take less than a second to lose a piston.

[robertisaar]

TTTDC isn't brand new, it has been done before, though i'm not sure who at the moment. but you can be assured they were using a GM ECM....

think of it this way: GM spent millions developing ECMs, certain ones much more advanced/elaborate than others. certain codemasks have been COMPLETELY disassembled/commented/hacked, meaning anything the engineers at GM were able to adjust, we can do it too. then you have the masterminds that know how to patch them, adding support for Wide-Band O2s, 27X15 fuel tables, nitrous activation, wastegate control, etc...

what i'm saying is: GM gave us a great starting point, expecting that we wouldn't have the capability or interest to modify it to our pleasure. but we can. we do. we will continue to do it until we feel the need to move onto something bigger and better. i don't see a reason to "downgrade" to a completely different ECU and give up the ability to do so much more...

[Smittro]

I've researched a TDCTT for roughly four years and have never once come across one. Maybe they are out there. I've never seen or heard of more than a single turbine used.

[Smittro]

Turbos and superchargers have been around for a very very long time. WWII aircraft were using them before there was even a such think as a "knock sensor". How was this done when higher rpms were a constant and a nessesity to maintain safe flight? It's still an internal combustion engine, and is built in pretty much the same way they were then. Even fuel injection has been around since the 1930s in volkswagons. I'm not sure you're getting where I'm comming from. Throw all we know aside for one second, and look @ it like this.
Bare motor, no electronics, nothing to make it run, design a system to achieve a goal. Once and or if the goal is achieved you now have a basis for new ideas. Not just in tunning, but in other areas of internal combustion as well.

[robertisaar]

thats the thing: you ARE throwing everything aside and trying to reinvent the wheel. why? there will be NO benefit in terms of power/economy/reliability from using a MS over a GM ECM.

the phrase i barely use but fits this situation comes to mind: if it ain't broke, don't fix it.

being somewhat of an engineer, i'm always looking for ways to make things better, so i know where you're coming from, but the path you're taking is longer and less reliable, therefore not the optimum path.

i'm just trying to say you'll get the same or better results faster and more reliably using the GM setup...

maybe i'm crazy, but that seems like a better way to do things.

[Smittro]

thats the thing: you ARE throwing everything aside and trying to reinvent the wheel. why? there will be NO benefit in terms of power/economy/reliability from using a MS over a GM ECM.

the phrase i barely use but fits this situation comes to mind: if it ain't broke, don't fix it.

being somewhat of an engineer, i'm always looking for ways to make things better, so i know where you're coming from, but the path you're taking is longer and less reliable, therefore not the optimum path.

i'm just trying to say you'll get the same or better results faster and more reliably using the GM setup...

maybe i'm crazy, but that seems like a better way to do things.

I hear you man. If I fall on my face it's okay. If it works out maybe we can compair notes. Maybe together we can come up with some radically new concepts. I dunno. But I'm going to proceed with my build my way for the present. If it fails no harm no foul. I'll start over again and continue to come here for advise and possibly have something new to bring the the TDC table.
I appreciate all your help and advise thus far. Dont think I dont because it's surely welcomed..

[robertisaar]

in that case, i (and i'm sure others here as well) will help where possible, but don't expect me to give any advice on running the MS. my knowledge of it ends after i learned its limitations. i believe b&g are still trying to make the UltraMegaSquirt, if and when that comes out, i'll re-evaluate it, but i'm not expecting miracles.

have fun trying to make a badass motor.

[Smittro]

in that case, i (and i'm sure others here as well) will help where possible, but don't expect me to give any advice on running the MS. my knowledge of it ends after i learned its limitations. i believe b&g are still trying to make the UltraMegaSquirt, if and when that comes out, i'll re-evaluate it, but i'm not expecting miracles.

have fun trying to make a badass motor.

Thank you, and thank you for all the time you've spent here trying to help me aswell.

[HayesPerformance]

I was meaning that I could tell you which auto recyclers around you or near by have one.

Thats all........