5th gear revs at 4k

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zoomxr8ed

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Joined
May 17, 2011
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Brisbane
Hey peeps.

I am kinda new. Got a VR4 E39A 89 jap spec... Gears are at a short ratio almost like I have to change quicker coz it revs high faster and travelling at 100kms at 4k rev.... Yeah i can smoke a few cars at 5th gear but I like watch the fuel needle drop and I am going through heaps of fuel..... Any suggestions??? What do I do??? Someone once told me this car was built for track and drag hence acceleration is good but I need it for street/highway driving now.

I am stuck... any ideas????

Thanks,


Roy
 
Hmm. If u can get a list of set up and mods that have been done then someone should be able to help with how to tune or set up ur car for what u want. I gather it's not stock as u said it had been built for track. :)
 
Dun really know wat kinda of was done to it. it was like that when i bought it.
yeah the vobvious is that it has microtech comp.. dual stage turbosmart controller. fuel pump is noisy hehe. goes like the clappers... no receipts... sux for me to not really know what it has... some desperate guy sold it to me coz he was leaving the country. If I did the mods meself then i can tell ya the details... hehehe.
 
Im pretty sure when i worked it out 3.909 ratios have you around 4k at 100kmph dont they? Probbaly just got 3.9 gears rather than 3.5
 
The alternator is stuffed on it right now and I will get that done and also the a/c compressor has signs of that getting burnt out and it is causing noise so I will get that done at the same time... but the ratios being at 3.9.... is there anything i can do to change that??? would be nice to rev at 2.8 at 100ks... Hey tim if I can get it done by this weekend I will get in touch with Eli and see if he wants to cruise out or something... we went for a little run the other week... Sorry cuz twas not my fault maybe we can try again after ya do some more work ta tha white tiger...
 
Read the code off the geabox bell housing.That can determine which gearbox it has, and your ratios, unless it's been built with differnt ratios.
 
ok i will try tomorrow... and we shall see... kinda hard with the big gut and all.. hahahha... thinking of adding some more guages as well... i got boost... what would be the more important ones to add? oil pressure?? charging as in battery voltage???
 
You would almost certainly have the low ratio diff combination ( ie from a VR4 RS ). The only way to lower the revs at 100 km/h is replace front and rear diffs with a standard VR4 front and rear diffs..... not exactly a 5 minute job !

Fuel economy.... Sorry but the Microtech isnt exactly known for its ability to give good fuel economy ! Even at 4000 rpm/100km/h, it should still give pretty good economy. Our gravel rally car with the same gearing still gives 10 litres/100 km on transport stages between special stages.

Regardless of how good the tuner is, the Microtech cant run in closed loop like lots of other aftermarket ecu's, and like the standard management. If its not an all out race car, do your self a favour and convert it back to standard and tune it using an ECMLink setup. The results will be like chalk and cheese. I actually use ECMLink on our race cars using standard factory management... and its pretty unbeatable here in S.A.
 
Ok I got the number off the bell housing it is w5m312vqbk.. which to me seems like it is off the galant non turbo... but still i dunno... dang... does anyone wanna swap trannies?? this one is rebuilt supposidly with all the goodies.. extra heavy duty this and that blah blah blah.. heheheh
 

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