BC

[Lee Hockley]

I bet I sound like a stuck record.

 

I tried to configure the BC this weekend and got stuck.

 

I started the process by clearing the memory by pressing three of the four buttons while the dash unit was off.

 

After beeping, to tell me that the operation was successfull, I pressed the two buttins to enter learning mode.  'L' displyed on the unit.

 

I used quiet strip of road and got her up to 3rd gear without any boost and proceeded to go from 2.5k revs to 7k revs.  The head unit changed to 'H'.

 

I proceeded to do the process again and when I hit 7k revs it beeped at me to stop.

 

Now, the unit was supposed to flash the stock boost but I must have missed it while parking up.

 

Even though I went through the motions I was not able to maintain a boost level, because I could see the bar reading going close to 1, and had to release the boost build up with the accelerator (release slighly).  Would this effect the results ?

 

The next stages are the next problem.  I dont know what to do now.  From the help I receieved previously, they state I must now enter in my numbers.

 

What are they then ?

 

(Edited by Lee Hockley at 1:24 pm on Feb. 4, 2002)

[Guest Martin F]

Lee as far as i know you can not use the HKS EVC in learning mode with the Supra. This is due to the turbo's being in sequential mode and when the second turbo comes in the EVC can't understand what is going on. You need to set it up manually.

 

You may want to take a look www.mkiv.com (when it comes back up) as quite a few of the American guys use this bit of kit, and there may be some setup instructions on there.

 

May also be worth checking to see if the unit is plumbed in correctly.

 

 

 

(Edited by Martin F at 9:37 pm on Feb. 4, 2002)

[Lee Hockley]

Thanks Martin, I'll check that out.

 

Does anybody know if these BC are removeable, and if they do, does the car return to stock thus stop overboosting ?

[GavinL]

Hi...

 

If one or more of the cats are present you will probably be okay.

 

Try getting to cached pages of MKIV.com via google.

[Lee Hockley]

Not having much luck from the mkiv site, but I have managed to get some more documentation.

 

I will give it another go the weekend.

 

And it seems you are right, the learning mode was a waste of time.

 

(Edited by Lee Hockley at 1:28 pm on Feb. 5, 2002)

[Alex]

If no-one on here knows try getting some decent settings from the SupraForums US site or talk to an HKS dealership they should be able to tell you some safe settings from which you can build on

[matt]

Lee

 

Re removal ..... you might need a coupla pipes or so but should be able to remove it easy enough.

Get the install manual .....to see how it all hangs together

 

Failing that contact Nathan at ............err TDI !! :biggrin:

 

I'm sure he has one in his Soop ......... and TDI are an HKS dealer

 

Feelings are mixed on here about TDI.......but I've always found Nathan very helpful

[Guest Martin F]

 

Actually a good new feature on the US HKS site is a forum\BBS.

 

Also there are HKS employees on there who try to help with any issues.

 

Might be worth a try.

 

www.hksusa.com

[Lee Hockley]

Alex, thanks for the US link.  I was able to track down some useful information.

 

Last night I was able to put some of it into action and I think I have the overboosting licked.  At the moment I am still not getting the performance I did when I test drove a stock Supra some months ago.  Hopefully when I get all the numbers input and maybe check the hoses I might finally have a fast motor.

 

Does anyone here have some numbers that they use for thier HKS BC ?  This information would be handy.

[Lee Hockley]

I have set my max boost level to 0.9 on my EVCIV and am using stock turbos and no FCD and cats installed.

 

What figure would I expect to use at this stage and what stages can be reached safely without cats \ FCD and\or hybrid turbos ?

[GavinL]

Quote: from Lee Hockley on 11:21 am on Feb. 7, 2002[br]

 

I have set my max boost level to 0.9 on my EVCIV and am using stock turbos and no FCD and cats installed.

 

What figure would I expect to use at this stage and what stages can be reached safely without cats \ FCD and\or hybrid turbos ?

 

 

Without fitting an FCD of some sorts you are going to hit fuel cut at about 15psi. Accordingly the safe max boost until you have the FCD can only be LESS than fuel cut.

 

 

 

 

[Lee Hockley]

Should anybody else need to know or for searches later I have found this useful information regarding the configuration of a HKS EVC :

 

Functions:

 

Setting the volume knob: Whenever you make an adjustment the settings, you may see a flashing L, turn the knob down (counter clockwise), then it will show a flashing H, turn the knob up (clockwise). Turn it back and forth as instructed until it sets itself.

 

Mode: Allows you to change EVC settings. Hit once for Offset.

2 times for Scramble boost, amount to add to the preset boost (i.e., 0.2bar).

3 times sets the length of time for the "added" scramble boost to last (0-30sec.)

4 times for Overboost Warning Mode. (***This is very important, if it hits higher than the overboost setting, the unit will shut down to stock boost. This will keep you from blowing up your car***) Always set this after you reset the EVC. Put it 0.1 to 0.15 higher than the high boost you are planning on running.

 

Alt: Switches between high and low boost mode. Lights up Green in Low, Red in High Mode.

 

Power: Duh!

 

Scramble Boost: Activates Added boost for the period you set with the mode button.

 

Resetting the EVC: Hold the top 2 buttons along with the lower right button to reset it. (Mode, ALT, and Scramble)

 

 

Tuning for Supra:

 

Turn the power on and reset the unit.

 

Turn the knob and set your stock boost.

 

(if you don't know it, set it at 0.65, hit the scramble button, and then go to redline in third gear. This is your Max stock boost. reset the EVC and then use this number)

 

Hit the scramble button and then add 0.15 bar to your stock boost (i.e., if your stock boost is 0.9 then enter 1.0) then hit scramble again.

 

Important: Hit mode 4 times to set your overboost.

 

Boost will now be set at you stock boost in low mode. Hit ALT to switch to High Boost mode and enter in how much boost you want.

 

Go do a 3rd gear pull and see if you get the desired boost. If it makes more boost than you want then reset the unit and add 0.5 more to your stock boost (0.2), if you get less, then add 0.5 less (0.1) etc.

 

If you can only get so close, you will have to use the Offset feature.

 

Hit the mode button once, and you will see 100. If you are overboosting, turn it up (between 101-150) if you are underboosting turn it down (between 99-50)

 

TTC Tuning:

 

Reset the EVC.

 

Hold down the ALT and Scramble Buttons (the 2 right buttons)

This will put the EVC in Learning Mode and display a L on the screen.

 

In third gear, accelerate until the EVC beeps and displays an H. (this may or may not be to redline.

 

Again in 3rd gear, from the same RPM as the first pull, go all the way to redline and let off. The unit should then beep and show your stock boost. Go ahead and set your overboost and then your desired boost level.

 

If you don't get desired boost (assuming its realistic), or it didn't go from L to H, you need to start from scratch.

 

If you still don't get the desired boost, you can use the offset button explained above to fine tune things.

 

If you can't get the unit to go from L to H, then you are either doing something wrong (i.e., not following instructions or are in Sequential mode). or you have some sort of vacuum or boost leak that is making boost inconsistent, keeping the EVC from learning your boost curve.

 

I take no responsibility for your actions, but as long as you set your overboost correctly you shouldn't be able to blow up anything. For the record all test pulls should be done on a closed racetrack.