ToyotaTech15 Posted March 22, 2011 Share Posted March 22, 2011 Was looking at a car for a customer and came accross this?Its wired into the ecu, first thoughts were a FCD but it doenst say that on it?All is says is JAM Super tuning systemGaz Quote Link to post Share on other sites
lukEp Posted March 22, 2011 Share Posted March 22, 2011 Yeh it a fcd mate but clamp type one I believe Quote Link to post Share on other sites
ToyotaTech15 Posted March 23, 2011 Author Share Posted March 23, 2011 Ok, never seen this before, thought the JAM ones had FCD written on them? also how do these compare to the HKS ones?Still a need for a RRFPR?CheersGaz Quote Link to post Share on other sites
Idrees Posted March 23, 2011 Share Posted March 23, 2011 Certainly a FCD.To run 1 bar, yes you'll need a RRFPR. Quote Link to post Share on other sites
ToyotaTech15 Posted March 23, 2011 Author Share Posted March 23, 2011 Ok perfect, thanks for clearing that upGaz Quote Link to post Share on other sites
lukEp Posted March 23, 2011 Share Posted March 23, 2011 I don't like them as they only modifie the signal at a set boost level .8 I think so on without fpr this car will fuel normal till .8 bar then run lean, but when added to a fpr before .8 bar it will run richer (remember these cars run rich anyway) and after .8 bar will run ok. IMO hks is better as it modified the signal from set go, so the fpr will bring it back on par and you will still have fuel cut if it over boosts Quote Link to post Share on other sites
_shaun_ Posted March 23, 2011 Share Posted March 23, 2011 luke beat me to it Quote Link to post Share on other sites
drew 007 Posted March 23, 2011 Share Posted March 23, 2011 I was always under the assumption it was the other way around Luke? Quote Link to post Share on other sites
lukEp Posted March 23, 2011 Share Posted March 23, 2011 Nope it make sence. if you up fuel pressure while running standard boost what do you get? Quote Link to post Share on other sites
drew 007 Posted March 23, 2011 Share Posted March 23, 2011 Yeah i see what you are saying...its just what ive read on the forums....just go's to show dont believe everything you read lol. Quote Link to post Share on other sites
addz Posted March 23, 2011 Share Posted March 23, 2011 I was under the impression the HKS was least favoured out of Greddy and JAM FCC/FCD.I remember reading this on TGTT on a few occasions, unless the thesis has changedI was always under the assumption it was the other way around Luke? Quote Link to post Share on other sites
lukEp Posted March 23, 2011 Share Posted March 23, 2011 As I said, hks tells tells the ecu it's running less boost even on tick over so you up the fuel preassure to compensate, which will make it an even fuel distribution, greedy jam or any clamp type Fcd will only tell the ecu the boost is less than it is at 0.8bar+ , so If you up the fuel pressure to compensate, below 0.8bar it will be running rich not sure if any of you know what boar wash is but what it means is that excessive fuel will basically wash the oil away from the boar and rings causing excessive ring wear and premature engine wear/failure Quote Link to post Share on other sites
Sparky Posted March 23, 2011 Share Posted March 23, 2011 I also heard the other way round but who gives a fuck I think we are all agreed that FCD suck hairy balls yes? Quote Link to post Share on other sites
TrisK Posted March 23, 2011 Share Posted March 23, 2011 As I said, hks tells tells the ecu it's running less boost even on tick over so you up the fuel preassure to compensate, which will make it an even fuel distribution, greedy jam or any clamp type Fcd will only tell the ecu the boost is less than it is at 0.8bar+ , so If you up the fuel pressure to compensate, below 0.8bar it will be running rich not sure if any of you know what boar wash is but what it means is that excessive fuel will basically wash the oil away from the boar and rings causing excessive ring wear and premature engine wear/failurethis is interesting to know, and makes a lot of sense. Quote Link to post Share on other sites
lukEp Posted March 23, 2011 Share Posted March 23, 2011 Well I had to have a fcd on my hks ecu which makes sence and worked very well as the afr was spot on when rolling roaded at mm rr day last year. Now I'm running blitz access and to me it don't feel as aggressive and fuels more as when I give it full beans from low speeds/revs I get a puff of black smoke which would indicate running rich. Quote Link to post Share on other sites
SiCaln Posted March 23, 2011 Share Posted March 23, 2011 it's slightly less crude than an FCD and is called a BCC in truth, a boost cut controller Quote Link to post Share on other sites
Nanglebadger Posted March 23, 2011 Share Posted March 23, 2011 tbh Luke, Jay has me informed the other way around.the JAM ones are better and safer than the HKS ones as the clamping approach is safer than tricking the ecu with signals.i guess there's a few opinions on these then lol.Phil. Quote Link to post Share on other sites
Sparky Posted March 23, 2011 Share Posted March 23, 2011 Hence my opinion being the most valid Quote Link to post Share on other sites
drew 007 Posted March 23, 2011 Share Posted March 23, 2011 Is the verdict still out there then lol. Quote Link to post Share on other sites
dac69er Posted March 23, 2011 Share Posted March 23, 2011 the jam fcd works quite well tbh. as the starlets tend to run quite lean up the top end anyway, clamping it to allow you to run 1 bar can be safe. you need to get it checked to be 100% though.the hks fcd just offsets voltage by a set amount depending on the position of the potentiometer on the front. im unsure whether it just does this when the boost is positive or throughout the whole range.either fcd will do the job equally well as long as it is checked to be sure. Quote Link to post Share on other sites
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