RobSupra Posted November 12, 2006 Share Posted November 12, 2006 how do people get round the map sensor seeing positive boost and throwing up the check engine light??? I am currently running a missing link inline with the map sensor at the minute just wondering if there was any ways around this? Link to comment Share on other sites More sharing options...
adi2009 Posted November 12, 2006 Share Posted November 12, 2006 What are you using as your fuel computer? I am told that the emanage should get around this, but that is not my first hand information. Link to comment Share on other sites More sharing options...
RobSupra Posted November 12, 2006 Author Share Posted November 12, 2006 i wondered that but didnt want to do anything without seeking advice first. Will removing the missing link give me a larger map to play with on the e manage as it stands now its not using the complete 16x16 map Link to comment Share on other sites More sharing options...
adi2009 Posted November 13, 2006 Share Posted November 13, 2006 I d like to know how this is done too, perhaps someone with experience with the emanage can throw some light on the topic? Link to comment Share on other sites More sharing options...
Ian C Posted November 13, 2006 Share Posted November 13, 2006 I haven't heard of this happening, does this actually happen? -Ian Link to comment Share on other sites More sharing options...
adi2009 Posted November 13, 2006 Share Posted November 13, 2006 Ian, I havent tried it yet but doesnt the NA's MAP sensor use vaccum to determine fuel? more vaccum = more fuel? so if someone were to go the NA-T route, am i right in thinking that the stock MAP sensor couldnt read positive boost and neither would the stock ECU. SO if this is the case then what should be done, can the stock MAP sensor signal be clamped and instead use the greddy pressure sensor to map fuel? I m going to give it a shot on my spare 2JZGE engine in a couple of months, using an EMU. Link to comment Share on other sites More sharing options...
RobSupra Posted November 13, 2006 Author Share Posted November 13, 2006 I think it can read a little positive boost but im unsure as to how much before the ecu throws a wobbler. Anybody out there able to shed some light on the subject for us??? Link to comment Share on other sites More sharing options...
Ian C Posted November 13, 2006 Share Posted November 13, 2006 Well, I doubt the NA MAP sensor is going to be able to read much positive boost but you never know. I don't even know why it's got one, seeing as it has a MAF sensor for air metering The sensor will just clip at it's maximum, much like the stock one at 1.25bar on the TT. I haven't heard of a fault code being logged on positive boost on an NA before... -Ian Link to comment Share on other sites More sharing options...
bromy Posted November 13, 2006 Share Posted November 13, 2006 IanC did the map on mine and there has never been any issues with it are you using the optional 3bar map sensor, even before when I was using a safc2 no problems with it reading +ive pressure.... dont know if it makes any difference but I am pretty sure my ecu is obd2 96> Link to comment Share on other sites More sharing options...
adi2009 Posted November 13, 2006 Share Posted November 13, 2006 Well, I doubt the NA MAP sensor is going to be able to read much positive boost but you never know. I don't even know why it's got one, seeing as it has a MAF sensor for air metering The sensor will just clip at it's maximum, much like the stock one at 1.25bar on the TT. I haven't heard of a fault code being logged on positive boost on an NA before... -Ian Ian I m pretty sure that the Jspec NA's have only a MAP sensor. It was the US spec ones that had MAF sensor. I remember posting a picture of my engine on here a long time ago when someone insisted that all NA's were MAF. Link to comment Share on other sites More sharing options...
adi2009 Posted November 13, 2006 Share Posted November 13, 2006 IanC did the map on mine and there has never been any issues with it are you using the optional 3bar map sensor, even before when I was using a safc2 no problems with it reading +ive pressure.... dont know if it makes any difference but I am pretty sure my ecu is obd2 96> Mate, by '3 bar map sensor' are you reffering to the Greddy emanage pressure sensor??? Link to comment Share on other sites More sharing options...
Shane Posted November 13, 2006 Share Posted November 13, 2006 I have been looking at this too recentley and this is what they say on another forum "The ECU will also need to be fooled into thinking there is no boost as it will not work if it sees boost pressure through the MAP sensor". Sadly it does not tell you how to do this though! This was in the tech part of mkiv.supras.org.nz Link to comment Share on other sites More sharing options...
bromy Posted November 13, 2006 Share Posted November 13, 2006 Link to comment Share on other sites More sharing options...
adi2009 Posted November 13, 2006 Share Posted November 13, 2006 [qimg]http://i7.photobucket.com/albums/y262/kimberley1979/4A.jpg[/qimg] Thanks mate. So is your stock sensor still wired in the system? Link to comment Share on other sites More sharing options...
RobSupra Posted November 13, 2006 Author Share Posted November 13, 2006 this is another thing that been bothering me. as i said before when i first had the conversion done my car was showing the engine check light when under positive boost. When i get round to fitting the greddy 3 bar sensor do i need to leave my missing link inline with the original map so it continues to not see positive boost??? Link to comment Share on other sites More sharing options...
Lebsteif Posted November 14, 2006 Share Posted November 14, 2006 IanC did the map on mine and there has never been any issues with it are you using the optional 3bar map sensor, even before when I was using a safc2 no problems with it reading +ive pressure.... dont know if it makes any difference but I am pretty sure my ecu is obd2 96> Bromy, would you mind to post your whole NA-t setup please? like SAFC2 aeromotive fuel pressure regulater etc Link to comment Share on other sites More sharing options...
bromy Posted November 14, 2006 Share Posted November 14, 2006 Bromy, would you mind to post your whole NA-t setup please? like SAFC2 aeromotive fuel pressure regulater etc Boostlogic stage 1 kit Tubular manifold Precision T61 turbo HKS gate Frount mount 2.5mm headgasket ARP head bolts Walbro pump Aeromotive fpr 525cc injectors e-manage blue with 3bar map sensor HKS EVC5 boost controller AEM wideband HKS boostgauge Link to comment Share on other sites More sharing options...
RobSupra Posted November 14, 2006 Author Share Posted November 14, 2006 bromy what kind of hp are you running with yoursetup??? Tried the car again today with the missing link removed, didnt run overly well due to just throwing some rough figures in that area of the map to make it safer but didnt throw up the engine check light as it used to so i think were onto a winner now Link to comment Share on other sites More sharing options...
bromy Posted November 15, 2006 Share Posted November 15, 2006 bromy what kind of hp are you running with yoursetup??? It made 283 at the wheels at just 0.35baand it is now at 0.8bar so it must be around 400 somewhere at the fly now, will be hoping to get to 1.4bar next year then will call it a day, but the good thing is it has never missed a beat Link to comment Share on other sites More sharing options...
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