Bobbeh Posted August 22, 2005 Share Posted August 22, 2005 Edit - due to missreading Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 22, 2005 Share Posted August 22, 2005 Ian said he's removed the FCON and is trimming with a SAFC now. Do keep up. Ah, well, I guess I spent too much time typing in that huge post to scour the thread for things contradicting Ian's signature Well, that makes life easier - Ian, what are your AFC settings? That'll tell me reasonably accurately what size injectors you've got -Ian Quote Link to comment Share on other sites More sharing options...
GeordieSteve Posted August 22, 2005 Share Posted August 22, 2005 Doesn't seem like 850's. He's be having some serious over fueling problems if they were Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 22, 2005 Share Posted August 22, 2005 I strongly suspect they are stockers, 550's at most. Not much point in more speculation until we get the AFC settings and the photo of the injectors -Ian Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 22, 2005 Share Posted August 22, 2005 I strongly suspect they are stockers, 550's at most. Not much point in more speculation until we get the AFC settings and the photo of the injectors -Ian Have you seen red stock injectors then? Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 22, 2005 Share Posted August 22, 2005 No. But I have seen salmon pink ones The AFRs, the turbo setup, and the programming of the AFC are going to be more indicative of the injector size than the colour in this case I think. -Ian Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 22, 2005 Share Posted August 22, 2005 No. But I have seen salmon pink ones The AFRs, the turbo setup, and the programming of the AFC are going to be more indicative of the injector size than the colour in this case I think. -Ian mmm whilst I agree the Japanese tuners tend to colour code ( I have a set of VVTi injectors too BTW ) what colour are the 550's in RX7's? Quote Link to comment Share on other sites More sharing options...
IanK Posted August 23, 2005 Author Share Posted August 23, 2005 Ok here's pics showing the settings on my old SAFC. Apparently there are dip switches on the back which can amplify the settings by 30%? ive not pulled the AFC out yet to see what they're set to. These setting were set by Whifbits at the begining of the month except for the idle which was at 7 o'clock as Terry adjusted that at bovingdon because it was reading far to lean on his guage. http://www.laserlines.com/supra/afc.jpg and heres a pic of one of my fuel injectors. http://www.laserlines.com/supra/injector.jpg Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 23, 2005 Share Posted August 23, 2005 These setting were set by Whifbits at the begining of the month except for the idle which was at 7 o'clock as Terry adjusted that at bovingdon because it was reading far to lean on his guage. It was reading 17:1 @ idle on my Autronic Analyser Quote Link to comment Share on other sites More sharing options...
IanK Posted August 23, 2005 Author Share Posted August 23, 2005 It was reading 17:1 @ idle on my Autronic Analyser Cheers Terry i couldn't remeber the exact figure it was at. Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 23, 2005 Share Posted August 23, 2005 It was reading 17:1 @ idle on my Autronic Analyser What did you get it to read by adjusting it to -4%? -Ian Quote Link to comment Share on other sites More sharing options...
IanK Posted August 23, 2005 Author Share Posted August 23, 2005 not sure, think it was 14 something, Terry? Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 24, 2005 Share Posted August 24, 2005 Ian 14.3-14.7 Quote Link to comment Share on other sites More sharing options...
Faye Brother Posted August 24, 2005 Share Posted August 24, 2005 what colour are the 550's in RX7's? Purple Denso's, IIRC. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 24, 2005 Share Posted August 24, 2005 Purple Denso's' date=' IIRC.[/quote'] Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 24, 2005 Share Posted August 24, 2005 Well, with pretty much zero adjustment at 4000rpm we can take it as read that the fuelling duration is stock at this point. The 1.1 and 1.2bar graphs give clip at 10:1 afrs on the graph, which says to me they go a bit below that into the 9's but the sensor can't read down that far. At 1.3bar the AFRs are higher up, despite no mapping changes being made. As the ECU is seeing the FCD'd airflow of 0.99bar, the fuelling stays the same (100%) so the AFRs changing as the boost increases says to me that the fuel delivery is at it's limit even though the injectors are 100% open at this point. Soooo, I'd say if they aren't stock 440's they are something very close to that - certainly not 850's -Ian Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 24, 2005 Share Posted August 24, 2005 So we need to find what injectors they are, still look red to me... Quote Link to comment Share on other sites More sharing options...
Dragonball Posted August 24, 2005 Share Posted August 24, 2005 I will be very suprised if Ian's car is not running something extra under the turbo shield On this RR before we have got much lower readings then 335 from stock and BPU autos (see previous threads) And they are red injectors He was running an F-Con which hopefully can get back on at Owens and see what it can do there! Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 24, 2005 Share Posted August 24, 2005 So we need to find what injectors they are, still look red to me... Yes, they look red to me as well, which is why I'm not just saying "they are stock", but they aren't hosepipes either - otherwise the car would bog down at 4krpm at 1.1bar of boost. The dyno sheet shows the AFRs while at 100% duty, I wouldn't say anything higher than 550cc even with hybrids under the hood... A flow test would show us, injector 6 is the easiest to pop out -Ian Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 24, 2005 Share Posted August 24, 2005 Ok here's pics showing the settings on my old SAFC. Apparently there are dip switches on the back which can amplify the settings by 30%? ive not pulled the AFC out yet to see what they're set to. Might be helpful if you can see if there's any adjustment on the rear. If that's right, the whole lot 'could' be adjusted by 30%, then fine trimmed using the dials on the front. Quote Link to comment Share on other sites More sharing options...
IanK Posted August 24, 2005 Author Share Posted August 24, 2005 ill pull the AFC out later and see what the rear switches are set to. Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 24, 2005 Share Posted August 24, 2005 Ian take a picture as I have never seen the early SAFC in detail so would be intrigued to see if it has got dip switches. Quote Link to comment Share on other sites More sharing options...
IanK Posted August 24, 2005 Author Share Posted August 24, 2005 Will do terry. Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 24, 2005 Share Posted August 24, 2005 Might be helpful if you can see if there's any adjustment on the rear. If that's right, the whole lot 'could' be adjusted by 30%, then fine trimmed using the dials on the front. My money is on that they aren't The fuelling behaviour at different boost levels indicates a static duty cycle no matter what the boost pressure, which is only acheivable if the airflow signal is being clamped by an FCD, and that's only acheivable if the airflow signal isn't being too drastically altered by the AFC. Backing off 30% of the signal would avoid fuel cut completely - the stock ECU would never see more than about 0.9bar, so the fuelling curves should be much more alike rather than moving up the AFR graph as the boost increases. That's my hypothesis anyway -Ian Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 24, 2005 Share Posted August 24, 2005 My money is on that they aren't The fuelling behaviour at different boost levels indicates a static duty cycle no matter what the boost pressure, which is only acheivable if the airflow signal is being clamped by an FCD, and that's only acheivable if the airflow signal isn't being too drastically altered by the AFC. Backing off 30% of the signal would avoid fuel cut completely - the stock ECU would never see more than about 0.9bar, so the fuelling curves should be much more alike rather than moving up the AFR graph as the boost increases. That's my hypothesis anyway -Ian That's what I thought Quote Link to comment Share on other sites More sharing options...
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