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Author Topic: "F1 LIGHT"  (Read 1265 times)
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vic
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« on: July 05, 2008, 03:41:58 PM »

I know this is an old topic but,

I have a stage two kit (Velocity) on a Busa. When ever I crack the throttle hard the F1 Light comes on. I hate it. 

Can you explain the check Valve deal. I guess I can start with that.

Oh yeah, it has secondaries.
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Chris Horoho
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« Reply #1 on: July 05, 2008, 03:55:07 PM »

the map shouldnt see boost
this is what the check valves are for
they bleed the boost off allowing the map sensor not to see the boost
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vic
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« Reply #2 on: July 05, 2008, 04:32:30 PM »

So place the check Valve by the map sensor???
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Chris Horoho
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« Reply #3 on: July 05, 2008, 04:58:04 PM »

call my cell ill talk you through the layout
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fatnslow
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« Reply #4 on: July 05, 2008, 04:59:49 PM »

is that a bad thing cause i was told this was normal, my bike does the same thing.
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Chris Horoho
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« Reply #5 on: July 05, 2008, 05:12:50 PM »

the bike might do it if you use an airshifter also
but with secondaries it shouldn't do it if setup right
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vic
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« Reply #6 on: July 05, 2008, 05:18:22 PM »

I have an MPS air shifter on mine also.........................Chris I have to call you during the week. I am at work right now.
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fatnslow
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« Reply #7 on: July 05, 2008, 05:23:08 PM »

well something must not be right cause mine has secondaries and when i bring the rpms up some it comes on. just tested it, revving it alittle in netrual and then letting it idle for about 4 seconds it comes on.
 hey vic sorry for jumping on your topic!
« Last Edit: July 05, 2008, 05:32:41 PM by fatnslow » Logged
Chris Horoho
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« Reply #8 on: July 05, 2008, 05:35:41 PM »

ok vic has to be in the evening though

fns pm me your number and ill call from my cell
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OzBooster
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« Reply #9 on: July 05, 2008, 06:33:42 PM »

If you bridge the terminals on the white plug with black rubber cap in the lrft front hump or left rear seat area you will get the fault code, then its easier to diagnose the fault , but this only works while the bike is running so you need to bridge the terminals, then induce the prob and read the code before switching off.
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fatnslow
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« Reply #10 on: July 05, 2008, 06:54:02 PM »

i know my light is on but the bike runs ok, does it mean something is really wrong.
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Coryonbusa
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« Reply #11 on: July 05, 2008, 07:12:26 PM »

My stage 1 throws the light everytime I get on the throttle. I've got 2 check valves after the map.
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'03 Busa, OG Stage 1 Ghetto w/Tony Finley's Secondary Upgrade.
vic
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« Reply #12 on: July 05, 2008, 07:29:28 PM »

Maybe the F1 Light coming on means nothing, but when mine comes on it just rips through my SPINE  Shocked. I can't explain it.
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vic
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« Reply #13 on: July 05, 2008, 07:31:26 PM »

well something must not be right cause mine has secondaries and when i bring the rpms up some it comes on. just tested it, revving it alittle in netrual and then letting it idle for about 4 seconds it comes on.
 hey vic sorry for jumping on your topic!



















This is good stuff Man  thumbs  up
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fatnslow
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« Reply #14 on: July 05, 2008, 07:47:06 PM »

well now im upset about my light now, shit i was told that it was ok, damn something else wrong with this pile of horseshit i call a bike!
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Coryonbusa
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« Reply #15 on: July 05, 2008, 09:49:17 PM »

No, no, no.
Everything is OK. The MAP sensor is only supposed to see vacuum. If it see's any positive pressure (boost), it throws the light. Suzuki did not design it with us turbo guys in mind, how rude of them! Cheesy
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'03 Busa, OG Stage 1 Ghetto w/Tony Finley's Secondary Upgrade.
fatnslow
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« Reply #16 on: July 05, 2008, 10:35:24 PM »

ok,  thumbs  up  cory you been back to the track!
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Coryonbusa
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« Reply #17 on: July 06, 2008, 12:16:43 AM »

Not yet. I just got my rear suspension set up yesterday. It feels real nice. Plus,  I've got some goodies on the way that I would like to get those installed before I make my next trip.

I like messing with gadgets as much as I like racing! Cheesy
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'03 Busa, OG Stage 1 Ghetto w/Tony Finley's Secondary Upgrade.
jasonsbusa
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« Reply #18 on: July 06, 2008, 08:36:04 AM »

Mike take OZ advice and check to see what the code reads.Very easy to do.
MPS shifters have been known to trip the FI code also.
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<a href="http://www.yougotbeer.com/ygb/buy-me-a-beer.jsp?id=5505034" target="_blank" title="Buy jasonsbusa a Beer at YouGotBeer.com"><img src="http://www.yougotbeer.com/linkImages/7_1_buy-me-a-beer.gif" style="border: solid black 2px"/>[/url]
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Chris Horoho
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« Reply #19 on: July 06, 2008, 11:05:57 AM »

No, no, no.
Everything is OK. The MAP sensor is only supposed to see vacuum. If it see's any positive pressure (boost), it throws the light. Suzuki did not design it with us turbo guys in mind, how rude of them! Cheesy
it depends on what is causing the issue (fi light)
if it is doing it while setting in the garage then i dont think its the map sensor seeing boost
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fatnslow
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« Reply #20 on: July 06, 2008, 11:21:26 AM »

thanks guys, jason i dont have a mps shifter, i have a knock off. my light didnt start coming on till the turbo was installed, but i never payed it any attention cause i was told that was normal.
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Coryonbusa
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« Reply #21 on: July 06, 2008, 11:52:58 AM »

it depends on what is causing the issue (fi light)
if it is doing it while setting in the garage then i dont think its the map sensor seeing boost


That's true.
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'03 Busa, OG Stage 1 Ghetto w/Tony Finley's Secondary Upgrade.
fatnslow
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« Reply #22 on: July 06, 2008, 12:23:26 PM »

cory what kind of goodies you got coming, everybody i talked to the guy who installed the turbo, he told me what to do but i wont say, dont want to piss anybody off.
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OzBooster
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« Reply #23 on: July 06, 2008, 06:41:16 PM »

Not unusual to have the light on after a run to redline on boost, should show injector fault codes if this was the case and no real problem,its just the injectors are not fully closing before they are opened again,  this causes the ecu to not see the back voltage spike associated with stopping the current to the injector . anything else needs attention  ...
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jasonsbusa
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« Reply #24 on: July 06, 2008, 09:27:18 PM »

Check the code and let us know what it is thumbs  up
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fatnslow
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« Reply #25 on: July 06, 2008, 11:36:06 PM »

will do jason just have to figure out what im looking for. thumbs  up
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brknwng
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« Reply #26 on: February 15, 2009, 02:30:34 PM »

New here but, was reading this thread which looks like it's been around for a while. Anyway, my 08 isn't turbofied yet and I have the same problem under hard acceleration.
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Gixer
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« Reply #27 on: June 15, 2010, 08:07:21 AM »

Hi.
I also I have such problem.
On my bike lights FI at about 2 PSI, the engine behaves as if it came to the limit.
What to do with MAP sensor?
Thanks a lot!


« Last Edit: June 15, 2010, 08:09:01 AM by Gixer » Logged
Chris Horoho
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« Reply #28 on: June 15, 2010, 09:18:18 AM »

Put a bleed off style check valve in before the map sensor (the stock map sensor)
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Gixer
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« Reply #29 on: June 15, 2010, 10:07:29 AM »

Thank you very much.
The bike finally working, just do this problem is bothering :-)
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Gixer
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« Reply #30 on: June 21, 2010, 02:10:32 AM »

Yesterday I installed two check valves before the map sensor.
The first, which only allows the vacuum, and the other behind it, which is used for relieving the MAP sensor and lets the air out.
I have noticed progress, although I feel a little delay in the start and work in small irregular idle.
But It happens to me at a pressure over 7 PSI sometimes turns FI.
I suppose this is due to inertia valve.
Is there anyone with similar experiences and how they were solved?
Thanks a lot!
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OzBooster
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« Reply #31 on: June 21, 2010, 03:15:19 AM »

I don't think your map sensor setup will work, just tee both to vent to atmosphere under boost ,and be closed so the map sensor functions normally any other time       
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Gixer
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« Reply #32 on: June 22, 2010, 05:20:51 PM »

Thank you very much for your reply!
I tried to do as you wrote, but it still appears the same problem, poor work at idle and again FI light to about 7 PSI.
I'll try to get a new check valves because they assume that the problem is.
I need one more tips.
Because of fear of detonation, what the maximum boost to have with my settings (stock piston, stock cams, 0.80 spacer and secondary injectors controlled by Megasquirt)?
Ignition and control of primary injector using stock ECU!!

Thanks
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OzBooster
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« Reply #33 on: June 22, 2010, 06:34:39 PM »

Jump the dealer plug and get the code, otherwise your only guessing
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Gixer
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« Reply #34 on: August 13, 2010, 02:59:37 AM »

The problem with the MAP sensor and the FI light I chose!
Thanks for your help!

I installed a new adjustable fuel pressure regulator.
When the reduced pressure, the engine loses power (this is normal) but then during the cruise, for example, at a speed of around 60-70 mph, AFR sometimes fall below 10:1.
Only the acceleration increases to around 13,5:1, at about 100 mph is normal, around 13.5 - 14:1.
No matter how you adjust the regulator ritiska fuel, the cruise mixture is very rich, where it could be the problem?
MAP sensor maybe?
Note:
Camshafts have not moved, but I left them at the normal position after I installed a 0.08-inch spacer. Is it possible that this is a reason to back fire, which happens when the engine is running at boost?

Another question,

What should be the pressure in the cylinder (with a 0.08 inch spacer)?

Thank you very much for your help!
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