Rb20 + Gt2535 = Not Responsive

[Finny]

Retard the timing down low?!!!

YES.... you can lower spool by retarding the timing down low. This is because the petrol is still igniting when the exhaust valve opens so you get hotter more expanded air comming out the exhaust which helps with spool. But obviously lowers the low end power a bit... depends on what you want really.

I lowered the spool on my old KKR480 by 1000RPM by doing this, but ofcourse its not really good for the turbo as it will run hotter for that brief moment that its in low revs. Also when I did it on my car I set it so that it would only do it if you had over 80% throttle so when daily driving it had good timing.

Go and retard your timing right back as far as possible, I bet the turbo will kick in really quick and probably get it really hot and most likley over boost past what the wastegate is set to. But obviously the car will run like shit....

[paulr33]

tuning can make the turbo come on more progressively and wake it up

but i think there is something missing to the puzzle, a tune will certinaly help

but i suspect theres another reason - check the basics

look for pipework leaks, cracked hoses, leaking vac lines etc

[huddy]

screw the actuator to 1 bar... wont even need to run the gay bleed valve then. This well help it ramp up hard for sure (check it on dyno for inj duty - my injectors (standard) were still good for 230rwkw (@ 1.2 bar with standard ecu and HKS fuel cut defender with hks 2530) - although your turbo should make more than mine did...

[works 510]

Yer bleed valve got the arse today.

Played with the actuator adjustment before. Added some pre load its making .9bar, Seems to come on abit harder but still full boost at roughly 5krpm.

I brought the car with a r32 gktech intercooler kit included. I may redo the pipes to suit a31 and put that on. If anyone has seen softy/phil's ceffy they'd know how dodgey the evo setup is

[limpus]

YES.... you can lower spool by retarding the timing down low. This is because the petrol is still igniting when the exhaust valve opens so you get hotter more expanded air comming out the exhaust which helps with spool. But obviously lowers the low end power a bit... depends on what you want really.

I lowered the spool on my old KKR480 by 1000RPM by doing this, but ofcourse its not really good for the turbo as it will run hotter for that brief moment that its in low revs. Also when I did it on my car I set it so that it would only do it if you had over 80% throttle so when daily driving it had good timing.

Go and retard your timing right back as far as possible, I bet the turbo will kick in really quick and probably get it really hot and most likley over boost past what the wastegate is set to. But obviously the car will run like shit....

I kinda agree partially with you there...a richer denser mixture would help spool the turbo up quicker...however i do not see the benefits of retarding the ignition timing down low as you have mentioned the low end suffers...and by quite a fair bit...

If we are talking about turbo spool alone then yes perhaps retarding the timing might help...but if all we want is just a richer mixture then wouldn't it make more sense to just richen up the mixture down low instead of retarding timing? also...i agree its gonna run hot as retarded timing does make the engine run hot...not a very good thing if you ask me...

I'd personally be more inclined to run as much timing as you can down low without detonation...running the engine as efficiently as possible improves power, torque and response...best case scenario for the engine...and as mentioned before...if his boost response is bad...it probably shows that there are restrictions in his system which should be sorted out first...restrictions plus alot of heat is not a good idea...