Supragal Posted November 23, 2003 Share Posted November 23, 2003 Wasn't that the point Ian was making though? I do have to agree, we just all go for what we hear is good. Personally I'd just refer to the 'textbook' - seems to work with 99% of my queries Quote Link to comment Share on other sites More sharing options...
Ian C Posted November 23, 2003 Share Posted November 23, 2003 My point was that I'd like to see if an FSE can actually increase power, because I've never heard of a bhp+ claim and yet people fit them as a power modification. People also fit them as a crutch for too-small injectors which is another matter entirely. I don't believe in them myself but I usually keep out of discussions about them One good reason is what Dude said there, "so we can see how alltering the pressure effects fueling etc ". Hands up who fitted one and then did a wideband fuelling test afterwards? Another good reason is that if you are overclocking your injectors in any way, you need bigger injectors, not something to force an unknown extra amount of fuel through the existing ones. -Ian Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted November 23, 2003 Share Posted November 23, 2003 FCD & Boost controller will give you more power. There's no substitute for boost pressure. Then go to a decent RR and run it from "off" incrementally (at 0.1bar stages) up to say 1.1 or 1.2 bar and get power curves for each setting. You will then see the gains. £ for £ I'll be surprised if you can beat this combo as a starting point. The other point which may seem obvious, is service the engine before you mod it. Quote Link to comment Share on other sites More sharing options...
Wez Posted November 24, 2003 Share Posted November 24, 2003 Originally posted by Ian C Hands up who fitted one and then did a wideband fuelling test afterwards? I did and as a result found that the car was running very rich so I pulled a lot of fuel from my map, this gives me a bit more head room for more power. :flame Dev Quote Link to comment Share on other sites More sharing options...
Wez Posted November 24, 2003 Share Posted November 24, 2003 Originally posted by John Packham FCD & Boost controller will give you more power. There's no substitute for boost pressure. I do not agree with this 100% there is a point when the boost is increased to a level which is outside the effeciency of the turbo and all you are doing is building heat this robs power not increases power. edited to add that what you want is air flow not pressure. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted November 24, 2003 Share Posted November 24, 2003 Wez, within the parameters I set out (up to 1.1 or 1.2 bar) and bhp per £ spent at this level of tune I stand by my statement. Quote Link to comment Share on other sites More sharing options...
Wez Posted November 24, 2003 Share Posted November 24, 2003 Originally posted by John Packham Wez, within the parameters I set out (up to 1.1 or 1.2 bar) and bhp per £ spent at this level of tune I stand by my statement. OK Quote Link to comment Share on other sites More sharing options...
Ian C Posted November 24, 2003 Share Posted November 24, 2003 Originally posted by Wez I did and as a result found that the car was running very rich so I pulled a lot of fuel from my map, this gives me a bit more head room for more power. :flame Dev So what you are saying is that when you put on the FSE to force more fuel out of your injectors, it ran rich? Which implies that you didn't need to force more fuel out in the first place? I don't understand why you didn't just remove the FSE again to remove one fudge factor from the equation, rather than leaning off the fuel map to compensate for running rich due to overclocking the injectors. -Ian Quote Link to comment Share on other sites More sharing options...
eyefi Posted November 24, 2003 Share Posted November 24, 2003 Originally posted by Ian C Hands up who fitted one and then did a wideband fuelling test afterwards? Another good reason is that if you are overclocking your injectors in any way, you need bigger injectors, not something to force an unknown extra amount of fuel through the existing ones. -Ian i have done a wideband test too. the stock injectors rnt run at their max pressure with the stock fpr. ive installed one cos im running 100 injector duty at wot, with my fuel map trimmed to suit the new fpr i expect to see less than 80% at wot and still (just) within the stock injector pressure. i dont see the fse valve as a cludge. Quote Link to comment Share on other sites More sharing options...
Wez Posted November 24, 2003 Share Posted November 24, 2003 Originally posted by Ian C So what you are saying is that when you put on the FSE to force more fuel out of your injectors, it ran rich? Which implies that you didn't need to force more fuel out in the first place? I don't understand why you didn't just remove the FSE again to remove one fudge factor from the equation, rather than leaning off the fuel map to compensate for running rich due to overclocking the injectors. -Ian Mine was for the same reason as eyefi, to reduce the injector duty which it succeded in doing. I replaced the regulator and the fuel pump at the same time. Ian, i get the impression that you really do not like these regulators. Quote Link to comment Share on other sites More sharing options...
eyefi Posted November 24, 2003 Share Posted November 24, 2003 dont bring back those memories Quote Link to comment Share on other sites More sharing options...
Adam W Posted November 24, 2003 Share Posted November 24, 2003 It's easy isn't it? Increasing fuel flow is trivial, you just need properly sized injectors and a suitable electronic controller/ECU. The difficult bit is getting more air through the engine, but cos we have turbo cars this is easy as well. Turn the boost up and/or fit a bigger turbo. All other mods are just about enabling the engine to cope with that boost pressure, whether it's IC/water injection to keep temps down, or forged pistons to survive where the stock ones would melt. Anything else is just a gimmick So, big turbo, big fuel, big computing power = big fun Quote Link to comment Share on other sites More sharing options...
Ian C Posted November 24, 2003 Share Posted November 24, 2003 Originally posted by Wez Mine was for the same reason as eyefi, to reduce the injector duty which it succeded in doing. I replaced the regulator and the fuel pump at the same time. Ian, i get the impression that you really do not like these regulators. I don't, but others do. I would have the bigger injectors, others wouldn't, each to their own. I've voiced my concerns, and you've given the best reason I've heard yet for having one so that's that really -Ian Quote Link to comment Share on other sites More sharing options...
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