Pabs Posted June 9, 2008 Share Posted June 9, 2008 Hey All, As some of you may know, I had an FSE valve on my car when I purchased it. After my initial RR results looking quite poor, and partial blame put on the fact the car was running very rich, I decided to get shot of the FSE and get the car back to stock FPR as soon as possible. Lots of research said nothing more than the OEM regulator was needed. Fuel Pressure before/after was checked and set as required. So - here are the results, along with the previous results with the FSE fitted. The ONLY things changed on the car was the FPR, and I also needed a new rad fitted (golpher). Oh, and of course the day/time of the run was different - last run was about a month ago, today was quite hot which may impact results too. Interesting comparisons I think - the car is still running a little rich, and we did a few more runs with increased boost dialed in but no extra power was gained - we think this is down to the AFR's at the moment?? (feel free to comment here!) I have an Apexi AFC2 which apparently can trim the fueling (no idea how yet) but might be able to get a bit more out yet. I'm MUCH happier with the new graphs - look much more like I'd expect (again - feel free to comment pls!) WITH FSE Power/Torque Boost AFR AFTER - FSE Removed Power/Torque Boost AFR Quote Link to comment Share on other sites More sharing options...
heckler Posted June 9, 2008 Share Posted June 9, 2008 blimey... best bin mine then! (getting replaced anyway) Quote Link to comment Share on other sites More sharing options...
Pabs Posted June 9, 2008 Author Share Posted June 9, 2008 lol... oh, gotta sort out when we'll meet up this week mate.. not sure when I'm free yet tho. Quote Link to comment Share on other sites More sharing options...
heckler Posted June 9, 2008 Share Posted June 9, 2008 lol... oh, gotta sort out when we'll meet up this week mate.. not sure when I'm free yet tho. weds/thurs/fri or weekend Quote Link to comment Share on other sites More sharing options...
Pabs Posted June 9, 2008 Author Share Posted June 9, 2008 ok mate - will pm you when i know Quote Link to comment Share on other sites More sharing options...
Homer Posted June 9, 2008 Share Posted June 9, 2008 Nice to finally have some graphs showing this, it confirms the long held believes of many here that they are utterly useless. Quote Link to comment Share on other sites More sharing options...
Pabs Posted June 9, 2008 Author Share Posted June 9, 2008 I'm just so glad that the graphs look more like they should - the car is still down on power I think, but with temps today in region of 26degrees outside the RR room, I expect this may have reduced output. I need to see if the Apexi AFC2 thingy (lol) can do what I need to reduce the fuel levels, and perhaps get a bit more power then. Does anyone know what AFR figures I should try to achieve? Or am I misunderstanding? Quote Link to comment Share on other sites More sharing options...
Homer Posted June 9, 2008 Share Posted June 9, 2008 The graphs show it is still fairly rich under boost, so there is certainly some power to be gained with the SAFC tweaked. Their resolution is very small so are not great for getting the most out of your car. However it's worth getting it looked at now you have a decent FPR. It was horribly rich beforehand Quote Link to comment Share on other sites More sharing options...
bondango Posted June 9, 2008 Share Posted June 9, 2008 Think the FSE is 1:7 ??? and not a 1:1 referenced valve, I used one a few years ago when they 1st appeared and chased my tail for 2 weeks with an untunable car before discovering this Quote Link to comment Share on other sites More sharing options...
Pabs Posted June 9, 2008 Author Share Posted June 9, 2008 well if the afc works i'll be happy - just want a car that runs like it should!!! It's cost me a lot of money to get it this far (wasn't expecting so many issues in the first 3 months of owning it) but fingers crossed the rest should fall into place soon Anyone want an FSE valve lol - it'll be going on ebay soon! Quote Link to comment Share on other sites More sharing options...
JustGav Posted June 9, 2008 Share Posted June 9, 2008 Just look at the difference in the AFR readings.. If there has proof then this is it! Quote Link to comment Share on other sites More sharing options...
Jake Posted June 9, 2008 Share Posted June 9, 2008 Think the FSE is 1:7 ??? and not a 1:1 referenced valve1:1.7 maybe. It couldn't be 1:7 really. Quote Link to comment Share on other sites More sharing options...
TLicense Posted June 9, 2008 Share Posted June 9, 2008 *ahem* from the depths of time..... http://www.mkivsupra.net/vbb/showthread.php?t=63460&highlight=fse+facts Quote Link to comment Share on other sites More sharing options...
bondango Posted June 9, 2008 Share Posted June 9, 2008 1:1.7 maybe. It couldn't be 1:7 really. yeah jake thats what i meant but couldnt remember how exactly it screwed things up...Tonys thread explains it all Quote Link to comment Share on other sites More sharing options...
_Shane_ Posted June 9, 2008 Share Posted June 9, 2008 nice one paul Quote Link to comment Share on other sites More sharing options...
Ark Posted June 10, 2008 Share Posted June 10, 2008 Pabs, do you have an EGT gauge? I wound down my fuel pressure on my FSE to stock levels which obviously leaned out the mix slightly but the EGT now goes through the roof at 1.2 bar... Quote Link to comment Share on other sites More sharing options...
paul mac Posted June 10, 2008 Share Posted June 10, 2008 good graphs mate i like to see facts, i think the thing with the FSE is yes it is a fudge it allows you to increase the head room of smaller injectors, my car would be an example of this using 550's but upping the pressure through the FSE to push the injectors to (for example) a 580cc injector, just fitting an FSE in isolation will do nothing (or worse as is the case here) to get anything out of them you need the car set up properly or have a reason why you need more fuel in the first place, i fitted mine when going single to get a bit more head room, having said that when my new engine goes in the FSE will be removed and a "proper" regulator fitted Quote Link to comment Share on other sites More sharing options...
TLicense Posted June 10, 2008 Share Posted June 10, 2008 The problem I found with it, as I logged, was it has no repeatability. Sometimes you'll boost up to say 1 bar and get a 1 bar increase in fuel pressure, the next time you boost up to 1 bar you'll get a 0.5 bar increase in fuel pressure, then you'll do it again and get a 1.2 bar increase in fuel pressure. So basically when you fit one of these, every time you floor it you're rolling a dice on whether the car will run lean / rich or stoich. That was with stock injectors with a stock base pressure, so not exactly pushing it either. Quote Link to comment Share on other sites More sharing options...
Pabs Posted June 10, 2008 Author Share Posted June 10, 2008 No EGT gauge I'm afraid. I have a Blitz SBC Boost controller, and Apexi AFC2. That's about it on the "gizmo" front I just thought it'd be good to compare results with the only change being the FSE. I suppose it is a good idea to check EGT's, but I don't really have a way of doing this at the moment. Quote Link to comment Share on other sites More sharing options...
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