ardasaliah Posted October 6, 2004 Share Posted October 6, 2004 1st, 2nd or 3rd gear ?????????? Quote Link to comment Share on other sites More sharing options...
geoffvalenti Posted October 6, 2004 Share Posted October 6, 2004 Originally posted by ardasaliah 1st, 2nd or 3rd gear ?????????? Manual or Auto? I don't think I get full boost in 1st gear in my auto, but everything's happening so quickly its a bit difficult to tell I'm pretty sure that from 2nd onwards its there, but at that rate of accelleration I tend to be watching the road rather than the boost gauge Quote Link to comment Share on other sites More sharing options...
ardasaliah Posted October 6, 2004 Author Share Posted October 6, 2004 auto- cheers for the reply Quote Link to comment Share on other sites More sharing options...
terribleturner Posted October 6, 2004 Share Posted October 6, 2004 Im with geoffvalenti, but with an auto im thinking that if you have overdrive off and you floor it from a stand still then as soon as you hit 3800/4000 revs you'll have full boost wont you?? All i now is slow and fast, and in like the second.....alot. Quote Link to comment Share on other sites More sharing options...
ardasaliah Posted October 6, 2004 Author Share Posted October 6, 2004 my full boost comes on just after 4 rpm and I think thats in second? Quote Link to comment Share on other sites More sharing options...
mawby Posted October 6, 2004 Share Posted October 6, 2004 Originally posted by terribleturner but with an auto im thinking that if you have overdrive off and you floor it from a stand still then as soon as you hit 3800/4000 revs you'll have full boost wont you?? Nooooo, how many times! The overdrive does not affect revs, boost or anything else like that. It just stops you going into 4th gear. I think we need to introduce an overdrive fine box for anyone who suggests it does otherwise! Quote Link to comment Share on other sites More sharing options...
terribleturner Posted October 6, 2004 Share Posted October 6, 2004 Sorry. I was told by a mate that overdrive kept it in gear longer up to and including 3rd. I guess i better go back to the drawing bored. Quote Link to comment Share on other sites More sharing options...
LeeT Posted October 6, 2004 Share Posted October 6, 2004 Originally posted by terribleturner Sorry. I was told by a mate that overdrive kept it in gear longer up to and including 3rd. I guess i better go back to the drawing bored. to be honest i always thought the same. ie with o/d on the car changes up gears quicker and like you say when off holds the gears longer:confused: Quote Link to comment Share on other sites More sharing options...
mawby Posted October 6, 2004 Share Posted October 6, 2004 Originally posted by leett to be honest i always thought the same. ie with o/d on the car changes up gears quicker and like you say when off holds the gears longer:confused: Right, well I'll quote from the Supra manual then. "Overdrive switch, for selecting either a three-speed or four-speed transmission". That's all it does. See this link for a detailed description of it. Quote Link to comment Share on other sites More sharing options...
Ian R Posted October 7, 2004 Share Posted October 7, 2004 Originally posted by leett to be honest i always thought the same. ie with o/d on the car changes up gears quicker and like you say when off holds the gears longer:confused: and I posted to this effect sometime ago coz I recon mine does as well be interesting to see whether or not we are all running stock or aftermarket ECU's. Well i'm gonna try it in o/d on and off and watch the rev counter and post up my findings after all it might just be my imagination Quote Link to comment Share on other sites More sharing options...
mawby Posted October 7, 2004 Share Posted October 7, 2004 The problem comes with accurately testing. The auto boxes characteristics are very dependant on how you use the accellerator. It's normally the case that when you turn off overdrive it's because you're doing some spirited driving, which in turn causes the auto box to hold gears longer etc, making it easy to mistake turning overdrive off as having some other affect than just disabling 4th gear. I did do some tests myself, and found that if I planted my foot on the accellerator the car would red line in all gears regardless of whether the overdrive is enabled or not. If the overdrive did prevent the box changing up so soon then I wouldn't be able to redline it with overdrive turned on would I? Anyway, I'm always interested as to why none of the professionals (someone like Chris W) don't just tell us the truth, I'm sure they have enough knowledge is this field to know whether the overdrive button does anything other than disable 4th gear. Quote Link to comment Share on other sites More sharing options...
ardasaliah Posted October 23, 2006 Author Share Posted October 23, 2006 so when do people get full boost? Mine is in 3rd Quote Link to comment Share on other sites More sharing options...
jaymdee Posted October 23, 2006 Share Posted October 23, 2006 If I floor mine with O/D on it accelerates away, changing up at approx 6750 revs, with full boost at about 4000. However, if I acceleerate with O/D off, it accelerates away, changing up at approx 6750 revs, with full bosst at about 4000. Oh wait.... that's exactly the same then, except I only get up to 3rd gear with O/D off Quote Link to comment Share on other sites More sharing options...
Ian C Posted October 23, 2006 Share Posted October 23, 2006 T67DBB at 1.4bar: 1st - laughable 2nd - it'll reach 1.2bar at about 5500rpm but never 1.4bar 3rd - 4700rpm 4th - 4400rpm 5th - 4000rpm 6th - 3600rpm -Ian Quote Link to comment Share on other sites More sharing options...
ardasaliah Posted November 12, 2006 Author Share Posted November 12, 2006 A BPU- do you get 1.2 bar in 1st gear? or is it in the lower gears Cheers Quote Link to comment Share on other sites More sharing options...
bignum Posted November 12, 2006 Share Posted November 12, 2006 You wont normally see your maximum boost in lower gears i,e 1st and 2nd as there isent enough load on the engine, you will always see more boost in higher gears or going uphill which obviously puts more load on the engine. Quote Link to comment Share on other sites More sharing options...
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