GeordieSteve Posted March 26, 2007 Share Posted March 26, 2007 Now I know sod all about AFR's hence the question. Does this sound normal as I'm a tad worried: Idle: normally about 14-15.5 Neg boost: WAY lean! Around 16's and even 17's Boost: 14's WOT: 10's I've been idling anything between 10's and 18's on cold lately but I think the plugs are in a right state but I have IK24's sitting spare to replace them Should I be worried??? Link to comment Share on other sites More sharing options...
Robert Posted March 26, 2007 Share Posted March 26, 2007 on idle im around 14. On WOT im on the 11's.Off boost from 14-15. I think your running too rich on WOT and you neg boost is too lean mate. Also low boost levels should be in the 13's to be safe i'd say. Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 26, 2007 Author Share Posted March 26, 2007 I'd say it was mid 10's on WOT. I'd love to test now but I'm in manchester and the misses has the car... no f*&kin way am I asking her to go WOT! Link to comment Share on other sites More sharing options...
Guest Nicholas Posted March 26, 2007 Share Posted March 26, 2007 edit just read again Link to comment Share on other sites More sharing options...
SteveR Posted March 26, 2007 Share Posted March 26, 2007 I also know nothing about AFRs on single turbos - but why would safe values be different to the stock setup? Link to comment Share on other sites More sharing options...
Pig Posted March 26, 2007 Share Posted March 26, 2007 What management you using? Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 26, 2007 Author Share Posted March 26, 2007 MapII. I had to be pulled from the dyno tho at Thor mainly due to a boost issue (now sorted) but there's still a problem with ignition mapping which needs resolved. May be due to this? Link to comment Share on other sites More sharing options...
Robert Posted March 26, 2007 Share Posted March 26, 2007 Well you can't do any ignition mapping with the map ecu so not sure what you can do? the map ecu should be able to pull the AFR's in the right area though mate. Its all in the mapper i say. Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 26, 2007 Author Share Posted March 26, 2007 Well you can't do any ignition mapping with the map ecu so not sure what you can do? the map ecu should be able to pull the AFR's in the right area though mate. Its all in the mapper i say. Oh yes you can Link to comment Share on other sites More sharing options...
Robert Posted March 26, 2007 Share Posted March 26, 2007 oh really? well maybe its not set up right but that can be sort once you get it on a dyno with a proper mapper Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 26, 2007 Author Share Posted March 26, 2007 It had to be pulled due to an error with the ECU (ECU was brand new with no diagrams for the J spec). Sure it can be set up now Link to comment Share on other sites More sharing options...
Ian C Posted March 26, 2007 Share Posted March 26, 2007 The MAP ECU 2 can do ignition timing but I think it's only one way? You can add or remove but not both? Can't recall exactly, prepared to be corrected. -Ian Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 26, 2007 Author Share Posted March 26, 2007 Not by me you won't. Not had a good look at it but it seems pretty good for the money. I'm getting det where the second turbo should be coming in because of the ignition issues Link to comment Share on other sites More sharing options...
bolarbag Posted March 26, 2007 Share Posted March 26, 2007 Off topic...what does WOT mean...slap me if thats a stupid question! Link to comment Share on other sites More sharing options...
Jake Posted March 26, 2007 Share Posted March 26, 2007 The MAP ECU 2 can do ignition timing but I think it's only one way? You can add or remove but not both? That can't be right, surely? The mapecu web site says Timing adjustments are easier because the table provides Advance and Retard control over the OEM settings. The PHR guys are pushing the MAP2 right? Perhaps one of them could confirm. Link to comment Share on other sites More sharing options...
Nic Posted March 26, 2007 Share Posted March 26, 2007 Off topic...what does WOT mean...slap me if thats a stupid question! Wide Open Throttle Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 26, 2007 Author Share Posted March 26, 2007 The PHR guys are pushing the MAP2 right? Perhaps one of them could confirm. My MapII came from PHR Link to comment Share on other sites More sharing options...
Guest MikeSupra Posted March 27, 2007 Share Posted March 27, 2007 about 15.5 is safe for off boost, if your about 2000-3000 revs, just crusing or 16-17 for really light to no throttle. It's usually mapped like that to give good economy when driving round town etc. If you have anything lower the 14.7 when just crusing, you may foul up your plugs real quick! Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 27, 2007 Author Share Posted March 27, 2007 That sounds about right then. Top stuff. Happy again now since the misses rang yesterday to say "your call smells of fire!" Link to comment Share on other sites More sharing options...
tDR Posted March 27, 2007 Share Posted March 27, 2007 MAP2 can indeed do ignition timing both ways, negative for retard and positive for advance, 0 for no alteration to OEM signal. All in a table of pressure vs. rpm, for example: Cheers, Brian. Link to comment Share on other sites More sharing options...
tDR Posted March 27, 2007 Share Posted March 27, 2007 It had to be pulled due to an error with the ECU (ECU was brand new with no diagrams for the J spec). Sure it can be set up now Sounds like Thor maybe haven't got to grips with the MAP2 yet? I'm learning the hard way myself. Cheers, Brian. Link to comment Share on other sites More sharing options...
GeordieSteve Posted March 27, 2007 Author Share Posted March 27, 2007 Not really coz they didn't fit it. There were no J spec diagrams to fit the MapII at the time so we had a little trouble with the ignition mapping. No biggie and all sorted now Link to comment Share on other sites More sharing options...
Alex Posted March 27, 2007 Share Posted March 27, 2007 about 15.5 is safe for off boost, if your about 2000-3000 revs, just crusing or 16-17 for really light to no throttle. It's usually mapped like that to give good economy when driving round town etc. If you have anything lower the 14.7 when just crusing, you may foul up your plugs real quick! No that's not right at all!! The MOST economical/cleanest burn is at 14.7:1. IDLE and cruise-0.3bar should be looking for 14.7:1...some find the engine works well in the low 15's at idle which is fine... 16's whilst cruising is just asking for trouble. As the boost climbs the AFR's should get richer...by 0.7bar you should be in the 11.7:1 ballpark....and hold that from there on...richening slightly with higher rpm'....I'd say 10.8-11:1 at full throttle & 7000 rpm Link to comment Share on other sites More sharing options...
Robert Posted March 27, 2007 Share Posted March 27, 2007 Yes i must agree with alex, you don't want to be seeing 16 or 17s unless your letting off. Cruising should be no less than mid 15s and on WOT no richier than mid 11's. Link to comment Share on other sites More sharing options...
Alex Posted March 27, 2007 Share Posted March 27, 2007 Yes i must agree with alex, you don't want to be seeing 16 or 17s unless your letting off. Cruising should be no less than mid 15s and on WOT no richier than mid 11's. 11's dead at very high rpm's give just a smidge extra protection....after all we're not driving race cars Link to comment Share on other sites More sharing options...
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