chownr 0 Posted March 6, 2007 Ive spent an hour or two researching the next phase of engine development which is going to be induction. As ever Ive read about the ultimate this and ultimate that, and also teh budget this and budget that, and I guess I fit somewhere in the middle ground, wanting a cost effective solution that deleviers a reasonable increase performance. What I dont see anywhere (and maybe Im not looking in the right place) is a definitive list/description/spec of the various options, including issues such as overall cost, ease of build, mapping etc to include increase in BHp (and not just Id say its added 25 bhP for example). If youve done a conversion whether bodies or carbs post the info and Ill collate in a list to give to the mods. If youre all shy PM with the info. What I want is good or bad experiences and definitive costs vs BHp increase. Any engines will do but Im particularly interested in Mi16 forms Many thanks Rich Share this post Link to post Share on other sites
James_R 3 Posted March 6, 2007 Carbs with mappable ign management woudl give the best cost per power power midrange. But injection is the best. Share this post Link to post Share on other sites
TKH 0 Posted March 7, 2007 A properly setup carb setup on a dizzy and a properly setup modern EFI setup should show virtually the same power. Where you get the big difference is in the tractability of the engine. The most important bit there is ignition mapping. You need a good 3D map on your ignition to get the most from a engine. But the step from something like DCOEs with a KMS ignition only ECU to a full KMS EFI system with new bodies is not that big. There is a very good argument just to go for the full EFI setup. A went for the full Alpha EFI setup and am over the moon with it. Its amazing what you can actually get from a engine. Well I was until two days ago and now it will not start. I wish I still had dizzy and carbs. Share this post Link to post Share on other sites
boombang 2 Posted March 7, 2007 Everyone I know with a carb based setup says they wish they'd spent the extra and gone for throttle bodies. Although as said above carbs + a dizzy can be easier to maintain yourself. Share this post Link to post Share on other sites
Martin W 0 Posted March 7, 2007 Carbs and Omex ignition management work a treat Share this post Link to post Share on other sites
DrSarty 90 1 Cars Posted March 7, 2007 I'm sorry if I'm repeating what I believe the original question was, but would someone please explain the basic difference(s) in: > £££ outright cost (to move from std injection plus std ignition) > expected outright power increase (ball park) > tractability of power (i.e. how it is practically delievered) of throttle bodies VERSUS carbs? Again I'm sorry if I'm restating it but I'm as interested as chownr is on this one. (Another) Rich Share this post Link to post Share on other sites
TKH 0 Posted March 7, 2007 Basic throttle body all in new is starting from around £1500. Same setup but with new carbs will be similar probably a few hundred less. But thats just as carb prices keep going up and up. Just the crabs on a dizzy and you will obviously save a lot a lot as you save 300 or 400 on your ignition only ECU. All will show similar power as already said. But actual power will depend on your entire spec. You have not even said what engine you are planning to use. Even the prices I have given are very ruff for this reason and could be way off the ball. Tractability differences has been explained but it is a very hard thing to quantify. If you looking at used parts then it comes down to luck as to how much you pay. Share this post Link to post Share on other sites
brianthemagical 1 Posted March 7, 2007 setting up costs may be greatly increased with tb's, as they don't have a flow sencing device it will need to be re-tuned for and new mod/alteration but it is easy to do as it involves a laptop and an rr. this also gives you the opertunity to set all the map points, tuning them to your application and any funny caracteristics/anomilies it may have. i belive thay can also get better fuel economy. there is a reason why most pro racing teams use efi and tb's. outright peak bhp can be the same as that is purly down to the max air the engine can suck in. Share this post Link to post Share on other sites
Kitsune 0 Posted March 8, 2007 I was more than happy with my 45's and 3D IM kit. It was on a daily driver too and caused no hassles. It certainly had the go when you needed it but I never really found out what power it had. Share this post Link to post Share on other sites
Dream Weaver 2 Posted March 8, 2007 My bike bodies and Emerald cost me about £1500 I think, and give a decent power hike. Share this post Link to post Share on other sites
