rob275 1817 Report post Posted January 11, 2017 It will be interesting to see what power this puts out! Probably not as much as we would all hope mind you. 4 Kal, Ztox, AJ124 and 1 other reacted to this Share this post Link to post Share on other sites
TTR 509 Report post Posted January 11, 2017 Open ITB's. Dat induction noise 1 Tareim reacted to this Share this post Link to post Share on other sites
Rich196 103 Report post Posted January 11, 2017 does that not have some form of charge tucked in there? Share this post Link to post Share on other sites
Kodename47 446 Report post Posted January 11, 2017 44 minutes ago, Rich196 said: does that not have some form of charge tucked in there? I agree, looks like a turbo. I see a GReddy sticker. Share this post Link to post Share on other sites
Varelco 211 Report post Posted January 11, 2017 It is turbo you can see the compressor housing in the photo. Share this post Link to post Share on other sites
Tareim 343 Report post Posted January 11, 2017 can confirm, turbo spotted which is a shame as it would be nice to know what improvements there could've been with ITB's on n/a Share this post Link to post Share on other sites
rob275 1817 Report post Posted January 11, 2017 He's developing it on N/A also. It's developed by Greddy primarily for N/A. Though unsure if N/A development is done and maybe they are testing with F/I now? cba to investigate Share this post Link to post Share on other sites
Kodename47 446 Report post Posted January 11, 2017 18 minutes ago, Tareim said: can confirm, turbo spotted which is a shame as it would be nice to know what improvements there could've been with ITB's on n/a Folllow the rest of this thread: http://www.ft86club.com/forums/showthread.php?t=63901&page=35 Celek's ITB'd 2.3 (I think) NA engine build due for completion early this year. The problem with ITBs are that getting the stock ECU is not built to run Alpha-N type fueling, I would guess that the GReddy is going to be running a Motec. I have an idea of how you could implement ITB fueling with ECUtek, not sure whether it would actually run though and would need a lot of time mapping. Share this post Link to post Share on other sites
will300 812 Report post Posted January 11, 2017 I'm not sure if that's the same ITM but SARD are working on a very similar design. Here are their design photo's: 2 AJ124 and Deacon reacted to this Share this post Link to post Share on other sites
Paul 442 Report post Posted January 11, 2017 Can someone explain what an ITB is? Share this post Link to post Share on other sites
Lauren 2259 Report post Posted January 11, 2017 Indepedent throttle body. This means one throttle body per cylinder. Rather than just one throttle for all four cylinders as is the case for our engine. Back in the old days when cars ran on carbs people (like me) used to fit twin 48DHLA Dellortos or DCOE Webber's. A good power increase was normally the result. If you look at an E36/E46 M3 you see they have individual throttle bodies. That's pretty cool, I do look forward to hearing the cost. I'm expecting north of £2K. Share this post Link to post Share on other sites
Tareim 343 Report post Posted January 11, 2017 7 minutes ago, Paul said: Can someone explain what an ITB is? Individual Throttle Body, this is a common look for the inline 4's with them basically instead of the single big throttle body just before the intake manifold, you have 1 throttle body per cylinder which can improve power and tunability iirc Share this post Link to post Share on other sites
Varelco 211 Report post Posted January 11, 2017 What's the advantage of this on a boxer engine? I mean I notice it still runs an intake manifold. The FA20 seems well designed I can't see the inlet system being very restrictive. Share this post Link to post Share on other sites
Kodename47 446 Report post Posted January 11, 2017 8 minutes ago, Varelco said: What's the advantage of this on a boxer engine? I mean I notice it still runs an intake manifold. The FA20 seems well designed I can't see the inlet system being very restrictive. It's all to do with the runner length, which is determined after the throttle. It's not really an intake manifold but a plenum chamber, with individual throttles it should mean that all the cylinders get better distribution of air. I guess the plenum allows a MAF to be run, colder air feed and a single filter. 1 Varelco reacted to this Share this post Link to post Share on other sites
Hoax 21 Report post Posted January 11, 2017 What is a ball park figure for power increase for one of these ITB set ups? Share this post Link to post Share on other sites
Kodename47 446 Report post Posted January 11, 2017 45 minutes ago, Hoax said: What is a ball park figure for power increase for one of these ITB set ups? You'd need cams to get the most out of them as it lends itself to higher RPM, our stock cams don't. Based on my knowledge of K/B series engines, you could get similar peak power aa low boost applications, but obviously without the torque. The FA20 would need more work than those though. They do sound bloody awesome. 1 Hoax reacted to this Share this post Link to post Share on other sites
Kodename47 446 Report post Posted January 11, 2017 More info/discussion here: http://www.ft86club.com/forums/showthread.php?t=7939 Includes the Wald one from TAS 2014 http://www.ft86club.com/forums//showthread.php?t=94116 Share this post Link to post Share on other sites
Rich 378 Report post Posted January 12, 2017 One of the big draws (other than sound) is that they improve response. When you open the throttle in a STB engine, the air has to fill the intake plenum and flow down the runners before power increases. With ITBs it only has to flow down the (short) runners, so power is delivered more quickly. Also the throttle being close to the injectors can improve air/fuel mixing resulting is a better burn and more power. Add in all the above and they are a nice but expensive upgrade. Share this post Link to post Share on other sites
Ztox 230 Report post Posted January 12, 2017 Love ITBs Not quite the same without the trumpets though Share this post Link to post Share on other sites
Varelco 211 Report post Posted January 12, 2017 I dont think the car will sound any different as you still have a manifold. Share this post Link to post Share on other sites
