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The mkiv Supra Owners Club

HKS Superflow cone probs


Adam Kindness

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Not heard of water pooling before. Most HKS filters I have seen have a fair bit if clearance underneath. Might be coming past the head lamp.

 

With warmer weather the under bonnet temperatures rise and you pull alot of hot air into the cone. So when in traffic and at slow speeds it can feel a little held back until the speed builds up and shifts some of the hot air away.

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Have fun at the weekend, I'd be interested to know how it feels with and without the headlight.

 

Just call it an HKS water injection kit, then it should add another 50bhp at least ;)

 

I've seen a few Japanese supras with a hole cut through the headlight feeding the air directly to the intake, anyone here done this or would know how to do this? I might experiment on my old plastic headlight unit.

 

cheers

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I'll take my pen and paper!! :p

 

Still havent done a run with just me in the car yet!!

 

All runs will be without headlight... unless its pissing it down :)

 

1st run - airbox, in manu mode

2nd run - airbox, in auto

3rd run - airbox, in manu with OD off

4th run - HKS cone, in manu

5th run - HKS Cone, in auto

6th run - HKS Cone, in manu with OD off

 

got my mates are coming along, UK spec prodrived p pack scoob and a 270bhp Audi TT... should beat them ( i hope ).... all depends on my infamous crail starts

 

i.e sideways! :D hehehehe

 

wish my exhaust and de-cat would just arrive too... they should help me nudge it into the 13's!!!

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The Trac ECU also controls the throttle during gearchanges and retards the timing slightly, so it tries to make the changes as smooth as possible. Removing the trac fuse makes the changes harder and quicker which improves the 1/4 mile times quite a bit.

 

It is also thought to totally remove the trac control over traction, even by just pressing the trac off button there is still apparently some control held by the trac system....

 

You can also reset the ECU and then drive about 10 miles to make the ECU relearn your current fuelling which makes things quicker again....by only for a couple of runs as the knock sensor kicks in and retards the timing.

 

I also tended to launch in 2nd and not first as the change up required is too quick and didnt seem to help.

 

Both fuses are in the main fuse box, just turn the lid over and check their location from that.

 

JB

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launch in 2nd? - take it you have a manual then ;)

 

2 fuses for trac? any pics? diagrams of locations or do they say trac etc (never looked in my fuse box yet)

 

 

'It is also thought to totally remove the trac control over traction'

 

so just remove the fuses permanently?

 

Resesting ECU - just disconnect battery yeh?

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I have a manual now, but used to do all my drag racing in my auto....

 

1 fuse for track, 2 fuses for ECU.

 

Just pull the trac fuse out and you can leave it out but you will get a flashing OD light or similar which is why most people dont leave the fuse out.

 

To reset the ECU just pull EFI1 and EFI2 fuses for about 10 seconds and then put them back in. Do it with the ignition off.

 

JB

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Adam

 

The traction control does still effect the power of the car even when turned off, definitely pull that Trac fuse out permanently, you'll soon get use to the bloody anoying flashing orange warning light after the first few months.....:devil:

 

I find disconnecting the negative battery connection for a few seconds a lot easier than pulling fuses, if you have an aftermarket alarm system then be careful as it can screw some of them up, though I've never had a problem with mine.

 

Once you do reset the ECU you may find that the car will not tick over and will cut out, don't worry as JB says after a few miles the ECU will learn the fuel settings and all will be fine.

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Cheers guys! Much appreciated :)

 

I'll take some pics of the correct fuses etc for future ref too! and i'll let you know what i think of the power/feel (maybe not tonight tho as its pissing down :( )

 

Got some good news today too! My wee track car's finally getting its engine put in :D

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Oh yeah, I think MANU stops working as well but I cant be sure of that. I never ever ever used MANU anyway so I dont know if it was effected.

 

BTW, those are not the ECU fuses, they are solenoids for something, EFI1 and EFI2 are 5th and 6th fuses to the right of the trac fuse.

 

JB

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They're relays .... you'll probably find that they're `downstream' of the ecu fuses (I take it they are marked ecu , since you pulled these) .... it would have the same effect as pulling the ecu fuses & probably easier to get your fingers around to pull:)

 

 

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