dude Posted April 13, 2003 Share Posted April 13, 2003 Guys , ive fitted uk injectors / race pump/adj. regulator/Apexi SAFC/blitz sbc and power meter . When i first started car after a few seconds it poured black smoke and wouldnt run after zeroing the AFC it starts clean (but not immediatly) but as it comes up on temp has a small misfire at idle , is this to be expected , its going up to leon to be tuned with a wideband O2 sensor so hopefully it will be ok then . john:flame Dev Quote Link to comment Share on other sites More sharing options...
GavinL Posted April 13, 2003 Share Posted April 13, 2003 I would imagine that the larger injectors are delivering more fuel and the car will run very rich until the AFC is tuned. Quote Link to comment Share on other sites More sharing options...
dude Posted April 13, 2003 Author Share Posted April 13, 2003 so this is normal for these mods ??? John Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 13, 2003 Share Posted April 13, 2003 Bigger injectors without ecu on time compensation will of course run rich, and the pressure reg may be putting out more rail pressure too. If you have just nailed this lot on it could be a million miles out until it's all set up properly, may even be causing bore wash, in which case it will be doing serious damage, quickly. Don't suppose the O2 sensor likes it either. Quote Link to comment Share on other sites More sharing options...
dude Posted April 13, 2003 Author Share Posted April 13, 2003 Chris now ive zereod ??? the AFC it seems a lot happier when its reved it doesnt emit loads of black smoke but before i did the AFC Zero you couldnt breathe in the workshop , its only on tickover it gets a bit lumpy , what do you reckon ok for a quick drive up to leon ?? John:flame Dev Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 13, 2003 Share Posted April 13, 2003 Probably OK, try and keep it on very light throttle cruise, it should be in closed loop then, and the O2 sensor will try and compensate, although mad rich mixtures may already have contaminated it. Quote Link to comment Share on other sites More sharing options...
Ian C Posted April 14, 2003 Share Posted April 14, 2003 I fitted pretty much the same stuff and ran about 500 miles on it, including the trip to CW's, all seems OK, it just did You'll be overfuelling by 25% but don't think you just lower everything on the AFC by 25%, it doesn't work that way - get it mapped via a wide-band O2 sensor as soon as you can. DO NOT use/allow someone to use the stock O2 sensor readings to map it. -Ian Quote Link to comment Share on other sites More sharing options...
Thor Posted April 14, 2003 Share Posted April 14, 2003 Ian, why not share your settings with dude until he can get it fine tuned. Quote Link to comment Share on other sites More sharing options...
Ian C Posted April 14, 2003 Share Posted April 14, 2003 It's a nice idea but I don't want any responsibility if it then runs lean and blows up for some reason. Nowt personal It'll be Ok for said quick drive up to Leon's -Ian Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 14, 2003 Share Posted April 14, 2003 Originally posted by Thor Ian, why not share your settings with dude until he can get it fine tuned. It's never that simple, too many variables. Quote Link to comment Share on other sites More sharing options...
dude Posted April 14, 2003 Author Share Posted April 14, 2003 Better Rich than Lean then ?????. now booked in with Leon . John:flame Dev Quote Link to comment Share on other sites More sharing options...
Thor Posted April 14, 2003 Share Posted April 14, 2003 Originally posted by Chris Wilson It's never that simple, too many variables. True, but it must be closer than stock to get him to Leon's safely. Quote Link to comment Share on other sites More sharing options...
GavinL Posted April 14, 2003 Share Posted April 14, 2003 Originally posted by Thor True, but it must be closer than stock to get him to Leon's safely. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted April 14, 2003 Share Posted April 14, 2003 Originally posted by Thor True, but it must be closer than stock to get him to Leon's safely. Fitting an adjustable FPR, but not knowing what it's set to is an ENORMOUS variable, which immediately makes any comparison between injector pulse widths meaningless I am afraid. Anyway, why am I worrying about a car going to Leons anyway... /joke, tongue in cheek/ Quote Link to comment Share on other sites More sharing options...
Thor Posted April 15, 2003 Share Posted April 15, 2003 I only meant for Ian to send John the settings for the SAFC. I thought Ian was back on a stock FPR not the FSE. John is still using the stock FPR I believe. If they are both using the same static rail pressure and a stock FPR with 1:1 ratio & assuming neither has a bad FPR I can't see the issue. Ian is running Hybrids so his car should be slightly richer. Just a thought. Quote Link to comment Share on other sites More sharing options...
Ian C Posted April 15, 2003 Share Posted April 15, 2003 I am on a stock FPR, John is on an adjustable one according to his first post, which as Chris says, appears to be an unknown variable. So that's an iffy start, and he's got faster-spooling turbos and potentially a different fuel pump, no idea what cams he's running... Not looking good With 25% larger injectors it's going to overfuel but not enough in the short term to cause problems, probably not even in the long term. It's certainly not going to cause as much damage as running lean because I typo'd a number or because his transition is faster due to not having hybrids or whatever! I don't want to come across as unhelpful, it's just too much risk for not enough gain. Also, once you have some numbers plugged in and the car doesn't seem to overfuel and doesn't seem to run lean, where is the incentive to get it sorted? Of course, you *will* at *some* point, but "it seems to be OK at the moment, that means I can go next Saturday instead and visit me mates this Saturday instead, oh, no, the Saturday after as I'm already booked for a trip to Yorkshire up the M1", and so on, know where I'm coming from? Lets face it, I don't like taking chances on the fuelling front these days -Ian Quote Link to comment Share on other sites More sharing options...
Thor Posted April 15, 2003 Share Posted April 15, 2003 Sorry guys I missed the adjustable regulator in the first post. Even so, unless it is an FSE & therefore 1:1.6 , it should be a 1:1. I can understand you concerns & fully appreciate the "whenever" attitude once the car is running almost right. Not sure about the fuel pump comment unless a different pump will alter the rail static pressure. I assumed John would have the sense not to cane it until it was fully tuned. I'll crawl back under my rock now Quote Link to comment Share on other sites More sharing options...
Ian C Posted April 15, 2003 Share Posted April 15, 2003 Oh, I'm not dissing John, I would also assume he wouldn't cane it either, and in fact would get it sorted asap with or without the settings, don't get me wrong I also have no idea if a different fuel pump would change the static line pressure and thus the fuelling behaviour - which is entirely my point Rock not required, 'tis a good discussion on the merits of swapping setup settings. Would have been nice to have more people's opinions mooted as well but we seem to be on our own. -Ian Quote Link to comment Share on other sites More sharing options...
dude Posted April 15, 2003 Author Share Posted April 15, 2003 Thanks guys , to clear things up i just phoned Leon when ordering the pump and reg and said im going hybrids send me whatever you reccomend , he sent an FSE reg and Sytec motorsport pump which is now in the car . John:flame Dev Quote Link to comment Share on other sites More sharing options...
Thor Posted April 15, 2003 Share Posted April 15, 2003 I think Sytec's are Walbro's. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.