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Need more torque, what can I do?
Posted: Tue Mar 14, 2006 12:38 am
by RallyRS
Hi,
I race my legacy in rally and its bogging in tight corners. I'm trying to left foot brake to keep boost up but not going so well.
I have replaced the air box with a pod filter and run a 2.5" mandrel bent exhaust with no mufflers. Maybe this has lost me my torque? Seems to be dead below 3500rpm.
I have a VF8 turbo and it hits boost around 2500.
I also use a eprom chip in standard ECU which seems to run abit too rich everywhere, I think it might be getting to much fuel sometimes???
Close-ratio box, anti-lag and stand alone ECU would help, but I need some more cost effective options.
Cheers
Hayden
Posted: Tue Mar 14, 2006 3:18 am
by Project_Legacy
my car also seems to run a bit too rich in all rpms, and mine does like to bog down also. i think u should check into that.
i dont think there is any way to up your torque without spending a lot of money.
as you said, you could do these
Close-ratio box, anti-lag and stand alone ECU would help, but I need some more cost effective options.
but that would all be expensive IMO. sorry i couldnt help ya any more.
Posted: Tue Mar 14, 2006 3:36 am
by BAC5.2
Want more torque, up the boost.
Posted: Tue Mar 14, 2006 3:45 am
by Project_Legacy
that wouldnt help much with low-end torque would it? i think thats what he wants. maybe im wrong.
Posted: Tue Mar 14, 2006 4:01 am
by jnorion
When you remove stock, restrictive intakes and exhaust, you usually sacrifice low-end torque for more up top.
Posted: Tue Mar 14, 2006 4:58 am
by BAC5.2
I don't think freeing up the intake or exhaust really hurts low-end torque on a turbocharged vehicle. I think it just increases top end, and the change makes the bottom end feel like it lost power.
Posted: Tue Mar 14, 2006 5:05 am
by douglas vincent
IF you are running too rich down low, its a definate power killer.
Posted: Tue Mar 14, 2006 5:24 am
by jnorion
BAC5.2 wrote:I don't think freeing up the intake or exhaust really hurts low-end torque on a turbocharged vehicle. I think it just increases top end, and the change makes the bottom end feel like it lost power.
I actually wasn't even thinking about turbo... that makes sense.
Posted: Tue Mar 14, 2006 5:49 am
by 555BCTurbo
jnorion wrote:When you remove stock, restrictive intakes and exhaust, you usually sacrifice low-end torque for more up top.
Incorrect
Posted: Tue Mar 14, 2006 6:49 am
by vrg3
If you do a lot of corners at relatively low speed, might you do better with a more spoolable turbo? A VF10 or TD04, for example?
Posted: Tue Mar 14, 2006 7:00 am
by douglas vincent
SupaChaga!!!
Posted: Tue Mar 14, 2006 7:57 am
by Kelly
What you suffer from is small displacement. I hate the 2 litre. Im forced to drive USDM WRX's all the time, and I just want to vomit all over them.
You need ignition timing my friend. Thaty'll gain ya some low end and spool up.
Posted: Tue Mar 14, 2006 8:15 am
by 555BCTurbo
rallitektech wrote:What you suffer from is small displacement. I hate the 2 litre. Im forced to drive USDM WRX's all the time, and I just want to vomit all over them.
You need ignition timing my friend. Thaty'll gain ya some low end and spool up.
2 Step limiter what?!?
Posted: Tue Mar 14, 2006 12:43 pm
by Manarius
Buy a new engine.
Really.
No replacement for displacement.
Posted: Wed Mar 15, 2006 2:25 am
by RallyRS
Thanks for your tips! All useful apart from new engine.
I think there is no cheap/quick answer. I need to get the wallet out and spend some money, again!!!
I good tune on a 4wd dyno with a stand alone ECU would be best I think??? maybe some anti-lag. Practicing my left foot braking everyday so that is alway hoping.
Better start saving.
Thanks for your help.
Hayden