Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 3m 3d Gender: Male Location: Perth Posted 09/04/08 04:48 AM Share Posted 09/04/08 04:48 AM 4.11's will make the car feell "laggy" Compared to stock gears as you are taking load off the motor so you dont build boost as quckly. the upside is even with less boost the 4.11's will get the car moving quicker than the stock gears on boost. Th 2800rpm convertor wont be doing you any favours off boost.My 6 speed manual ute has 4.1's in it and in 1st and 2nd get around 6 pound at around 2800rpm. In 3rd and 4th i see 8 to 10 pound around 2500 rpm. Once it gets past six pound it boosts up to 15psi in the blink of an eye.if you want to get rid of the lag fit a hot side pipe kit, nizpro/process west/rapid pleum and pipe kit.that'l fix it Luke Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 10m 19d Gender: Male Location: SW Sydney Posted 09/04/08 04:49 AM Share Posted 09/04/08 04:49 AM as a comparison to that ^, my car is getting 10-12psi at 2800 rpm - T56 with stock diff gears Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 3m 3d Gender: Male Location: Perth Posted 09/04/08 05:13 AM Share Posted 09/04/08 05:13 AM (edited) as a comparison to that ^, my car is getting 10-12psi at 2800 rpm - T56 with stock diff gearsIn which gear Senna? The biggest problem with the 4.11's is maintaing traction in 1st and 2nd. Obviously wheel spin = less traction = less load = less boost.The marangoni's mytho's are really good at maintaning traction in second but i havent got around to looking at what boost its making at what rpm in second since fitting themEDIT:forgot to mention my car is tuned to come on pretty conservativly due to my smallish injectors and fuel pump. I could probably get more boost in lower if i did fit a surge tank and bigger squirts Edited 09/04/08 05:16 AM by hiddeous Link to comment Share on other sites More sharing options...
WOLF Member 58 Member For: 17y 8m 18d Gender: Male Posted 09/04/08 05:17 AM Share Posted 09/04/08 05:17 AM Ahhhh buy a v8 and put a positive displacement charger on it if the lag is a problem.My thoughts and plans exactly Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 10m 19d Gender: Male Location: SW Sydney Posted 09/04/08 05:22 AM Share Posted 09/04/08 05:22 AM hiddeous, mine is doing that in 3rd, like yours mine is spinning 1st and 2nd by at least 3500rpm Link to comment Share on other sites More sharing options...
BFHOON Donating Members 1,932 Member For: 18y 9m 2d Gender: Male Location: nsw Posted 09/04/08 05:42 AM Share Posted 09/04/08 05:42 AM I use multi scramble boost settings to hold boost back in 1st to stop wheelspin and hit it in second with more. Link to comment Share on other sites More sharing options...
veczar Gold Platinum Member Member 1,081 Member For: 20y 6m Gender: Male Location: Victoria Posted 09/04/08 05:59 AM Share Posted 09/04/08 05:59 AM What plazmaman kit have you got as his top of the line kit with CAI should reduce lag as less pipework etc. Link to comment Share on other sites More sharing options...
BFHOON Donating Members 1,932 Member For: 18y 9m 2d Gender: Male Location: nsw Posted 09/04/08 06:18 AM Share Posted 09/04/08 06:18 AM iv noticed the p800 kit with added hot side and cai spools up much quicker and sounds like a 747 taking off.I had a guy in a vl ask me what mofo turbo I have in that. Link to comment Share on other sites More sharing options...
XRPete Member 673 Member For: 17y 3m 16d Gender: Male Location: Here Posted 09/04/08 06:31 AM Share Posted 09/04/08 06:31 AM To what extent can a tuner choose(Adjust) when boost comes on? Obsivouly it depends on mods, but lets say on a stock car with a simple custom tune. Can it be brought on at 3000rpm or 4000rpm by simply changing a few things around in the tune? Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 10m 19d Gender: Male Location: SW Sydney Posted 09/04/08 06:33 AM Share Posted 09/04/08 06:33 AM it can, but it will depend on how strong your wastegate actuator is, the stock one can't control boost too well when you get up in power and boost levels Link to comment Share on other sites More sharing options...
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