Stupid Doubt about FMUs
03-11-2006, 06:18 PM
#12
3.0 BAR
Join Date: Apr 2003
Posts: 2,579
Re: Stupid Doubt about FMUs
what kind of fuel pump
But whats hapening at very high boost levels i.e. we have gone upto 22 PSI with WG disconected. the car just seems to run out of gass.
thats not good
Originally Posted by chinoy
But whats hapening at very high boost levels i.e. we have gone upto 22 PSI with WG disconected. the car just seems to run out of gass.
03-11-2006, 08:54 PM
#13
0.0 BAR
Join Date: Feb 2003
Posts: 0
Re: Stupid Doubt about FMUs
Ron, remind me when I am sober to forward to you all of Bruce "Grumpy" Plecan's 6 coil CDI DIS information, when he upgraded from a wasted spark DIS. I think it's in line with what you were experiencing when you had all the power gains from your DIY ignition modifications. VERY interesting stuffs!
03-11-2006, 09:03 PM
#14
1.5 BAR
Join Date: Nov 2005
Posts: 667
Re: Stupid Doubt about FMUs
http://store.summitracing.com/defaul...=egnsearch.asp
this has been run one some boosted carbed crx's.dont know if it will fix your problem because the ew motors blow before 20 psi
this has been run one some boosted carbed crx's.dont know if it will fix your problem because the ew motors blow before 20 psi
03-12-2006, 11:49 AM
#16
0.5 BAR
Join Date: Jan 2006
Posts: 95
Re: Stupid Doubt about FMUs
Originally Posted by chinoy
Considering all the facors such as how pressure in the carb also effects flow thru the jets. The carb is doing a pretty decent job of keeping the a/f ratio ok.
Im using a narrow band with the LM9044V to track a/f and its showing a healthy range bwteen 12:1 to 14:1
Im using a narrow band with the LM9044V to track a/f and its showing a healthy range bwteen 12:1 to 14:1
03-12-2006, 12:03 PM
#17
1.0 BAR
Thread Starter
Join Date: Apr 2005
Posts: 375
Re: Stupid Doubt about FMUs
Right thats why Im buying a WB
But my little DIY O2 setup has saved me an a few budies from blowing up our engines.
Till the WB arrives its better than nothing. And it does work.
I also built a WB setup but turned out I had the wrong sensor for the circuit.
Thats what you get for rushing into projects. Now Ill just buy one as work with the Ignition development means no time to spare.
I asume you where refering to this unit
NOS-15851NOS
http://store.summitracing.com/defaul...=egnsearch.asp
But my little DIY O2 setup has saved me an a few budies from blowing up our engines.
Till the WB arrives its better than nothing. And it does work.
I also built a WB setup but turned out I had the wrong sensor for the circuit.
Thats what you get for rushing into projects. Now Ill just buy one as work with the Ignition development means no time to spare.
I asume you where refering to this unit
NOS-15851NOS
http://store.summitracing.com/defaul...=egnsearch.asp
03-12-2006, 09:18 PM
#19
3.0 BAR
Join Date: Apr 2003
Posts: 2,579
Re: Stupid Doubt about FMUs
Originally Posted by Joseph Davis
Ron, remind me when I am sober to forward to you all of Bruce "Grumpy" Plecan's 6 coil CDI DIS information, when he upgraded from a wasted spark DIS. I think it's in line with what you were experiencing when you had all the power gains from your DIY ignition modifications. VERY interesting stuffs!
03-12-2006, 09:56 PM
#20
0.0 BAR
Join Date: Feb 2003
Posts: 0
Re: Stupid Doubt about FMUs
okay okay.
Originally Posted by Bruce
To: <fangle@yahoogroups.com>
Subject: [fangle] 6 coil DIS
From: "Bruce Plecan" <bplecan@woh.rr.com>
Date: Thu, 23 Feb 2006 22:23
6 -0500
From:
http://www.t6p.com/forums/showthread.php?t=11341
Well, I've finally got things bolted down, and wired up well enough to do
some intial testing.
The 6 coil part is that I used the DIS module, and instead of just firing 3
coils, I now fire 6. The module probably wouldn't handle firing 2x the
current from 6 coils, so I used an ACCEL 300 CD ignition module with each
coil. Those modules only reguire a 250ma, *sink* to fire. This also means
multispark firings, up to redline.
The intial findings are:
Low load EGTs, are down 100dF.
High load EGTs, are down 200dF.
The idle speed is higher by 100 RPM, and smoother.
There is a slight decrease in %TPS to maintain, freeway speeds.
There was no signifigant change in AFRs.
This comparison, is against a DIS system that had 3 ACCEL 300 CD ignition
modules, each module firing one of the *normal* DIS coils. In adding the CD
modules to the original set-up, I had to add some fuel to maintain the pre
change, AFRs.
Next up, is opening up the plug gaps, and seeing if the engine is less prone
to high boost misses.
Bruce
Subject: [fangle] 6 coil DIS
From: "Bruce Plecan" <bplecan@woh.rr.com>
Date: Thu, 23 Feb 2006 22:23
6 -0500From:
http://www.t6p.com/forums/showthread.php?t=11341
Well, I've finally got things bolted down, and wired up well enough to do
some intial testing.
The 6 coil part is that I used the DIS module, and instead of just firing 3
coils, I now fire 6. The module probably wouldn't handle firing 2x the
current from 6 coils, so I used an ACCEL 300 CD ignition module with each
coil. Those modules only reguire a 250ma, *sink* to fire. This also means
multispark firings, up to redline.
The intial findings are:
Low load EGTs, are down 100dF.
High load EGTs, are down 200dF.
The idle speed is higher by 100 RPM, and smoother.
There is a slight decrease in %TPS to maintain, freeway speeds.
There was no signifigant change in AFRs.
This comparison, is against a DIS system that had 3 ACCEL 300 CD ignition
modules, each module firing one of the *normal* DIS coils. In adding the CD
modules to the original set-up, I had to add some fuel to maintain the pre
change, AFRs.
Next up, is opening up the plug gaps, and seeing if the engine is less prone
to high boost misses.
Bruce
