Cable drive or fly-by-wire

[Vegas69]

Originally Posted by coolwelder62

Jimi;Why do you use one of the new Toyota drive by wire TB & gas pedal.

That's what I was thinking....great mind think alike. Or something like that.

[XcYZ]

I was hesitant at first going throttle by wire as I didn't know if it would hinder performance. I guess I saw it primarily as utilitarian.

After putting a fair amount of miles on my car and playing with EFI Live, I would absolutely recommend going with a GM ECM and throttle by wire. If/when I do another car, I will definitely go that route again.

[James OLC]

I went with a cable activated TB because (a) I'm still a bit of a dinasaur and (b) there were some debates going on in some of the different sanctioning bodies about the legality of DBW in competition. Obviously there are now lots of DBW cars in competition so it's evolved past that now.

The only comparitive feedback that I can offer or have been given is 1. DBW can have a slight or momentary disconnect between driver input and the engines response and 2. there might be a bit more sensitivity with the cable throttle but there might be hiccup with that as it [i]might[/m] be possible to open the throttle mechanically faster than the TPS can compensate. Might.

I don't think that there is a right or a wrong answer Jimi - I think that it will depend more on the ECM choice than anything.

[Steve1968LS2]

Originally Posted by 509Chevelle

Forgive me for riding on the same coat tail, but I want to know as well. Which is better or the benefits of one over the other?

Cable: Less electronics.. adjust idle with a tool.. can flip the butterfly with your finger to show off to friends. Down: have to run a cable at the right angle, have to punch it though the firewall, less adjustability, subject to mechanical failure. Oh, with cable you can go with a bigger TB.. like 105mm.

TBW: cleaner install, more adjustability, easy to wire in gas pedal, cleaner firewall, comes with GMPP harness kit, TBW TB ships with all new GMPP crate engines. Down: subject to electrical failure, stuck with 90mm TB, can't blip the throttle from the engine bay so you have non-impressed friends.



I personally love the TBW system on Penny.. many hard miles with no issues.. after all, this stuff comes on new cars so it's pretty dependable (just stay clear of the Toyota TBW stuff)

[scherp69]

Originally Posted by Steve1968LS2

Down: subject to electrical failure, stuck with 90mm TB,

Nick Williams now has a 102mm DBW intake. It's the one I'll be getting to go with my 102mm FAST intake. http://www.lgmotorsports.com/catalog...189&osCsid=be3

[Matt@BOS]

Wow guys, I'm a bit surpised you would wish a Toyota drive-by-wire assembly on Jimi, I always though people around here liked the guy.

Anyway, Jimi, did you order the engine as Turnkey's basic package, or sans wiring and everything else they typically throw in with the package? I know they generally use a cable throttle body with their engines, which are setup with with Delphi ECMs, so if you're getting everything from Turnkey, then it might be easiest to go the cable route, although since they use Delphi ECMs the choice is probably yours.

I just spent last week really learning to drive with Corvettes out at Bondurant and was quite happy with the drive-by-wire gas pedal, then again I'm pretty use to those types of pedals as I have one in my Mustang. In my opinion they definitely have a different feel than cables.

Matt

[GregWeld]

Just installed the DBW / TBW in the 55 Post -- on an LS2... it was super simple - clean firewall - works flawlessly and I had ZERO to adjust.

[Tom.A]

Another vote for DBW. That's what I have on my LS3 along with Speartech harness. Not running yet but seemed like the right choice.

[98ssnova]

Might have to switch to DBW but that means i would need a new ECU correct I have one out of my 98ss camaro?

[projectile]

I'm going with dbw with a GM ecu. I like the idea of a simple cruise control set up...