yoda598 Posted August 18, 2019 Share Posted August 18, 2019 Hey guys! I recently fitted some 1000cc injectors to my ba xr6t. I didn’t get any data with them. I used the data from the “how to” of scaling injectors. It runs! Not badly either. Afrs swing around abit but cruise isn’t terrible and wot is 9.0! Just wondering what I should do next to get it closer to perfect! Now keep in mind I’m a beginner, never done a injector swap before so I’m sorry if I don’t understand the first time haha. Here’s a pic of my injector data. Quote Link to comment Share on other sites More sharing options...
finnigan001 Posted August 18, 2019 Share Posted August 18, 2019 Do you have anything that allows you to see fuel trims? Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted August 18, 2019 Share Posted August 18, 2019 I saw your post on facebook showing "1000CC" as the part number on those random black injectors. I would highly recommend pulling them out and putting something known in the car. One of them might be leaking as 9:1 AFR is maxing the guage out (they won't meter below this), to get that rich with those slopes something has to be seriously wrong. Those cheap injectors often are terribly balanced which means if you get your AFR correct you might be leaning out one cylinder and pop goes the motor. The saying "the poor man pays twice" couldn't be more true when it comes to performance car parts. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted August 18, 2019 Share Posted August 18, 2019 Quote Link to comment Share on other sites More sharing options...
BeerTurbo Posted August 30, 2019 Share Posted August 30, 2019 have you read the injector thread? just eyeballing your data your high slope looks a bit low for 1000's. also, as mentioned, brand name injector, with data is what you need. perhaps get your flowtested Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted August 31, 2019 Share Posted August 31, 2019 A customer had one injector flow 25% less due to this retarded rail design. Can be all sorts of reasons things don't work. I am a big believer of the OEM seal of approval. I bet there are worse issues out there than this as well! Quote Link to comment Share on other sites More sharing options...
BeerTurbo Posted August 31, 2019 Share Posted August 31, 2019 1 minute ago, Roland@pcmtec said: A customer had one injector flow 25% less due to this retarded rail design. Can be all sorts of reasons things don't work. I am a big believer of the OEM seal of approval. I bet there are worse issues out there than this as well! thats a solid WOW. Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted August 31, 2019 Share Posted August 31, 2019 7 minutes ago, BeerTurbo said: thats a solid WOW. It is also why we don't offer tuning advice! Majority of the time there are serious hardware problems! Just to name the sort of issues that people have initially thought are software related. Earth crimps falling out. Earths not bolted down Earths bolted onto a dirty greasy chassis. TCM can links sticky taped together and coming loose randomly. TCM female plug sockets backing out causing intermittent issues. Half an engine loom swapped and sticky taped together. BA alternator replaced with FG smart alternator causing injectors to get stuck on 100% randomly. Fuel pressure reg fitted backwards. Fake sensors off ebay. It is why we don't offer phone support for non workshop customers, as the majority of these issues arise due to dodgy backyard DIY swaps or parts from random ebay/gumtree sellers eg these "1000cc" injectors. I would love to see how well they are matched on a flow bench, I wouldn't be surprised if a smooth idle is impossible without individual injector trims being applied. Quote Link to comment Share on other sites More sharing options...
finnigan001 Posted August 31, 2019 Share Posted August 31, 2019 2 hours ago, Roland@pcmtec said: BA alternator replaced with FG smart alternator causing injectors to get stuck on 100% randomly. There’s a good way to kill a weekend. Stuff of nightmares trying to diagnose that one Quote Link to comment Share on other sites More sharing options...
yoda598 Posted August 31, 2019 Author Share Posted August 31, 2019 i have worked them out now. theyre more like 1600cc at 4 bar. yes, they are cheap crap. but they were free haha. i have a spare engine so im just gonna test with them. see what happens. so far good results. its on e85 now, no issues at all. Quote Link to comment Share on other sites More sharing options...
finnigan001 Posted August 31, 2019 Share Posted August 31, 2019 Nice! Thanks for reporting back Quote Link to comment Share on other sites More sharing options...
BeerTurbo Posted August 31, 2019 Share Posted August 31, 2019 2 hours ago, yoda598 said: i have worked them out now. theyre more like 1600cc at 4 bar. yes, they are cheap crap. but they were free haha. i have a spare engine so im just gonna test with them. see what happens. so far good results. its on e85 now, no issues at all. thats a big jump... most injectors would go from 1000cc to 1150 or so cc with 4 bar regs......was this tested on flow bench? otherwise id be back to considering leaky injectors causing bad afr readings Quote Link to comment Share on other sites More sharing options...
yoda598 Posted August 31, 2019 Author Share Posted August 31, 2019 Afrs are smooth now I’ve worked out slopes. Drives like stock almost! I thought the same about the pressure vs flow but the numbers I’ve ended up with are a fair bit away from 1000cc data. Only issue I’m having now is that after a full throttle run down the track it stays very very rich after I lift throttle and start coasting. Does it for roughly 10 seconds. I’m going to re read the injector data post and see what I’ve missed. Quote Link to comment Share on other sites More sharing options...
finnigan001 Posted September 1, 2019 Share Posted September 1, 2019 May not have anything to do with your injector data. If its only doing it after a long run on a strip at WOT it maybe exhaust or turbo heat protection kicking in and causing the AFR to default to 0.7(from memory)... There are 2 areas to look at in fuel section and the turbocharger section. Quote Link to comment Share on other sites More sharing options...
yoda598 Posted September 1, 2019 Author Share Posted September 1, 2019 Oh I didn’t think of that! Thanks very much! I’ll look into that! Quote Link to comment Share on other sites More sharing options...
BeerTurbo Posted September 1, 2019 Share Posted September 1, 2019 5 hours ago, finnigan001 said: May not have anything to do with your injector data. If its only doing it after a long run on a strip at WOT it maybe exhaust or turbo heat protection kicking in and causing the AFR to default to 0.7(from memory)... There are 2 areas to look at in fuel section and the turbocharger section. where is the 0.7 set? Quote Link to comment Share on other sites More sharing options...
finnigan001 Posted September 1, 2019 Share Posted September 1, 2019 took me awhile to find it lol... Its moved to under engine temp limits auF0157 - Lowest LAMBSE allowed to control cat temperatures. Other cat control settings: auF0196 Cat Temp Control auF0197 Cat Temp Control Stage 2 auF2536 Catalyst temperature which temp. control is exited. auF0199 Exhaust Protection Enable Temp Quote Link to comment Share on other sites More sharing options...
Roland@pcmtec Posted September 1, 2019 Share Posted September 1, 2019 Should be able to find most of them here Quote Link to comment Share on other sites More sharing options...
yoda598 Posted September 2, 2019 Author Share Posted September 2, 2019 turns out all thats turned off already so there must be another issue. ill keep searching but so far except for this issue its doing quite well on such cheap injectors Quote Link to comment Share on other sites More sharing options...
yoda598 Posted September 1, 2020 Author Share Posted September 1, 2020 almost a year later to the day and im happy to say these injectors are still going strong on flex fuel making over 300kw daily. Quote Link to comment Share on other sites More sharing options...
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