Project Cheap
#242
Currently its a 197408-0010 MAF
http://www.ebay.com/itm/JAGUAR-XJ8-M...2#ht_500wt_969
I put it inside this
I finally figured out my rich at idle issue!
I ended up turning the injector dead time at 13.2v down to .750ms from 1.2ms that was in the base tune from diy.
I'm using rx7 460cc injectors
I was able to idle at 15afr around 1.5xx pw 900~ rpms 28kpa just fine.
#244
Under MS2extra it is
basic setup > injector characistics > injector dead time.
Picture of my car setup
I need to put a recircurlating valve in there.
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#245
A look at the datalog
You can see AFR is around 15.x~
AFr target is 13.0
so find the percent difference between the two.
And add that much % difference between those two in grams a second in those areas.
There you tuned that area part
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You can see AFR is around 15.x~
AFr target is 13.0
so find the percent difference between the two.
And add that much % difference between those two in grams a second in those areas.
There you tuned that area part
Uploaded with ImageShack.us
#248
You can run VTA bov with a maf provided the maf is behind the BOV.
There are different reasons as to why you would use speed density over maf
Package constrants, racing, reliability, etc.
Most people that would go install a standalone do it because either they need it for racing or their stock ecu can't handle the increase in power.
I personally am after repsonce and good feel.
You can see how the pressure spikes but maf isn't as effected as much. My fueling was rock steady
There are different reasons as to why you would use speed density over maf
Package constrants, racing, reliability, etc.
Most people that would go install a standalone do it because either they need it for racing or their stock ecu can't handle the increase in power.
I personally am after repsonce and good feel.
You can see how the pressure spikes but maf isn't as effected as much. My fueling was rock steady
#250
And I couldn't idle anything but rich like that.
A 1.8 MSM runs around 3-6 grams/s at idle from what I hear
at 1.2ms I was hitting .30grams a second at idle, yeah thats not right
at .750 ms i idle around 2-3 grams a second with no real load.
Now the only load on the car is the alternator, one fan and lights if they are on, plus heater\vent
So i figure I"m in the ok seeing as I'm a 1.6l
#251
I heard of that but thats still way to close to 1.2ms.
And I couldn't idle anything but rich like that.
A 1.8 MSM runs around 3-6 grams/s at idle from what I hear
at 1.2ms I was hitting .30grams a second at idle, yeah thats not right
at .750 ms i idle around 2-3 grams a second with no real load.
Now the only load on the car is the alternator, one fan and lights if they are on, plus heater\vent
So i figure I"m in the ok seeing as I'm a 1.6l
And I couldn't idle anything but rich like that.
A 1.8 MSM runs around 3-6 grams/s at idle from what I hear
at 1.2ms I was hitting .30grams a second at idle, yeah thats not right
at .750 ms i idle around 2-3 grams a second with no real load.
Now the only load on the car is the alternator, one fan and lights if they are on, plus heater\vent
So i figure I"m in the ok seeing as I'm a 1.6l
#255
radiator installed and my coolant temps stay better under boost. Still want to do coolant reroute. All aluninum radiator crossflow, 3inches wide, 22 inches long, 19 inches height. My MS2 is setup using MAF for fuel and MAP for spark. Eventually I will create a spark table using MAF instead for load. Way easier to tell where you are at on a turbo compressor map now, atleast for me. I've made a how to guide for maf fueling on megasquirt. I had to swap to a different MAF becaues the other one died, got it from a local garage with it probably being a bad one already. Using a N62 nissan maf, good for a supposed 350hp worth of air mass flow. Now I just need to get my idle working again.
Last edited by Techsalvager; 03-24-2012 at 10:01 AM.