Converter Locking @ WOT, why

[Boost]

Thanks guys, I guess I can see that. Wouldn't it be jerky though? I think our Cruze does that to save fuel and it's a little bit jerky.

[joecar]

V8 fires every 90º (vs I4 fires every 180º) and has greater rotating mass/inertia...


also V8 has bigger displacement so it makes more torque starting from a lower rpm, this allows the TCC to be locked (and kept locked) at lower vehicle speed (i.e. torque multiplication is not needed so TCC can be locked)...

the low rpm engine torque balances nicely against vehicle mass/inertia (provides a very pleasing sensation during cruising).

[Stroked250r]

Nothing on this yet? I read a post on another forum saying that HP Tuners has got the TCC unlock problem fixed...??

[joecar]

Nothing on this yet? I read a post on another forum saying that HP Tuners has got the TCC unlock problem fixed...??

Can you post a link to that.

[Stroked250r]

Can you post a link to that.

Performance Trucks.Net...page 2

[Lextech]

This is it. http://www.hptuners.com/forum/showthread.php?t=41057

Jeff

[Stroked250r]

Submitted a reply with a link to PT.net. Waiting for it to show up.

[Boost]

I wouldn't care if HPT had 3d hologram maps for tuning and came with a massage

V8 fires every 90º (vs I4 fires every 180º) and has greater rotating mass/inertia...


also V8 has bigger displacement so it makes more torque starting from a lower rpm, this allows the TCC to be locked (and kept locked) at lower vehicle speed (i.e. torque multiplication is not needed so TCC can be locked)...

the low rpm engine torque balances nicely against vehicle mass/inertia (provides a very pleasing sensation during cruising).

Thanks Joe, very well explained! So are you saying V8s are more balanced? Then what's up with the LS2 idle?

(just being a smart arse)

[N0DIH]

My DD (Lexus GS400) is a 4L V8 and it locks up the TCC low, as low as 1000 rpm at cruise. I can't get my 3800 Supercharged V6 at all to be smooth at that low rpm. I keep trying, but nothing I do works well at low rpms on a 3800.....