Scott Dabinett Posted March 5, 2013 Share Posted March 5, 2013 I have got my car back from DVA power and i had a set of VVC cams installed so a bit hotter than standard and also had some porting done. Would the car benifit from a supersport ECU at all? Reading the tread about peak power the rev limit is higher on a supersport ECU and i guess different fueling? Thanks Scott Link to comment Share on other sites More sharing options...
skydragon Posted March 5, 2013 Share Posted March 5, 2013 If you can afford it, a Emerald ECU, some verniers and a rolling road session would be the best bet I guess. Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted March 5, 2013 Leadership Team Share Posted March 5, 2013 Quoting Scott Dabinett: I have got my car back from DVA power and i had a set of VVC cams installed so a bit hotter than standard and also had some porting done. Scott, what was the spec of the engine before you started? Stu. Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted March 5, 2013 Area Representative Share Posted March 5, 2013 Scott, What year is your car? Are you 1600 or 1800? If its an EU3 car (2001 or later), then Z&F tuning can modify your existing ECU. 'Not sure what the VVC cams are like, but if its a 1600, then I'd guess that with slightly wilder cams AND a little porting, then peak will be later than the standard 6800rpm limiter. Link to comment Share on other sites More sharing options...
NoLimits Posted March 5, 2013 Share Posted March 5, 2013 Why Emerald - isn't it serial based. software and USB to serial is going to get more difficult to keep up with. CAN is the way to go Link to comment Share on other sites More sharing options...
Scott Dabinett Posted March 5, 2013 Author Share Posted March 5, 2013 The car was just a standard 1999 roadsport 1600, then had the VVC cams and porting! Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted March 5, 2013 Leadership Team Share Posted March 5, 2013 Are you sure? It's not possible to fit a VVC inlet cam(s) to a K16 head Stu. Link to comment Share on other sites More sharing options...
Scott Dabinett Posted March 5, 2013 Author Share Posted March 5, 2013 Quoting sforshaw: Are you sure? It's not possible to fit a VVC inlet cam(s) to a K16 head Stu. Maybe it might have just been the exhaust cam? Not entirely sure, Dave Andrews did it for me! I will find out! Link to comment Share on other sites More sharing options...
Mankee Posted March 5, 2013 Share Posted March 5, 2013 2x VVC exhaust cams is what will have been fitted. Dave Walker, as well as others, have written about about the benefits. Management/mapping adjustments will be required to get the best out of them though. http://www.emeraldm3d.com/articles/cat/walkers-workshop/post/dec2011/ Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted March 6, 2013 Leadership Team Share Posted March 6, 2013 Interesting ... and DW talks about a 20bhp power gain so a Supersport ECU could be the way to go. Stu. Link to comment Share on other sites More sharing options...
johnv Posted March 6, 2013 Share Posted March 6, 2013 I have one you could try out (not for sale though!) Surrey Rolling Road is just down the road from here, so for the £40 or so fee you could find out if there's an extra 20bhp in there Link to comment Share on other sites More sharing options...
Mankee Posted March 6, 2013 Share Posted March 6, 2013 This is what I'd be doing: Quoting skydragon: If you can afford it, a Emerald ECU, some verniers and a rolling road session would be the best bet I guess. It's a fair amount of cash, but it will be future-proof. However, this is actually an awesome idea: Quoting johnv: I have one you could try out (not for sale though!) Surrey Rolling Road is just down the road from here, so for the £40 or so fee you could find out if there's an extra 20bhp in there Just make sure that the fuelling and ignition timing isn't miles out because, from memory, the Supersport cams have a slightly longer duration and more lift than VVC exhaust cams. And there's more than one Supersport profile as well, so Caterham may or may not have changed the maps for the MEMS to suit. Link to comment Share on other sites More sharing options...
Jerry Auton Posted March 6, 2013 Share Posted March 6, 2013 Scott another option would be to consider a Z & F tweak of your existing ECU here It made a positive difference to my 1.8 with a DVA 13A kit on. Link to comment Share on other sites More sharing options...
Mankee Posted March 6, 2013 Share Posted March 6, 2013 I don't think the EU2s are mappable, unfortunately. Link to comment Share on other sites More sharing options...
TomB Posted March 6, 2013 Share Posted March 6, 2013 I thought I read recently on DVA page that the VVC cams had a wider bearing, and thus couldn't fitted in the K16. Unless Im confused and its the other way round - a K16 cam cant be fitted into a VVC head? Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted March 6, 2013 Leadership Team Share Posted March 6, 2013 Quoting TomB: I thought I read recently on DVA page that the VVC cams had a wider bearing, and thus couldn't fitted in the K16. Unless Im confused and its the other way round - a K16 cam cant be fitted into a VVC head? Yes confused 😬 The VVC inlet cam arrangement has bigger end bearings but the exhaust cam is the same bearings as per K16/vhpd. Stu. Link to comment Share on other sites More sharing options...
Graham D Posted March 6, 2013 Share Posted March 6, 2013 Scott, Your original post suggests that DVA did ALL the work for you. Did he refit the head and time the cams? If he did, I would leave well alone, he knows what he’s doing. A few years ago he made the same modifications to the head of my 1.8 EU2 and it transformed it. The engine now feels more eager and is very free revving, but it still returns 40mpg, has no lumpy tick over, and it also appears to have acquired a nice burble on the overrun. You didn’t mention vernier cam pulleys. My car already had them, so I was able to set the new cams up using DVAs recommended settings. Graham Link to comment Share on other sites More sharing options...
Scott Dabinett Posted March 6, 2013 Author Share Posted March 6, 2013 Quoting Graham D: Scott, Your original post suggests that DVA did ALL the work for you. Did he refit the head and time the cams? If he did, I would leave well alone, he knows what he’s doing. A few years ago he made the same modifications to the head of my 1.8 EU2 and it transformed it. The engine now feels more eager and is very free revving, but it still returns 40mpg, has no lumpy tick over, and it also appears to have acquired a nice burble on the overrun. You didn’t mention vernier cam pulleys. My car already had them, so I was able to set the new cams up using DVAs recommended settings. Graham Yea he did everything! I managed to get away without vernier pulleys! Dave modified another set of pulleys he had and shimmed it out so get the timing correct! I guess that means it is all timed to suit the ECU? Just thought if it was a case of swapping ECU's it would be easy power! Link to comment Share on other sites More sharing options...
Graham D Posted March 6, 2013 Share Posted March 6, 2013 If changing ECUs was going to release a significant amount of power I’m sure he would have mentioned it to one of us. Graham Link to comment Share on other sites More sharing options...
oilyhands Posted March 6, 2013 Share Posted March 6, 2013 I'm not a great fan of the SS ECU as it's rev limit is set too high for the stock pistons. The cams used were VVC exhaust cams modified to accept an EU2 rotor arm spigot, these were timed to the correct lift at TDC by slotting the timing dowel holes on a spare set of pulleys and then shimming behind the timing roll pin to gain the timing adjustment required. The results provided pretty accurate timing at a lower cost then verniers. The head was only mildly ported so The engine should run just fine on the stock ECU, the rev limit is then much more sensible. Dsve Link to comment Share on other sites More sharing options...
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