Independent Throttles and Setting Up ITB Mode 

Do you use “multiply MAP” in ITB mode or do you leave that off?

Nice work! The little things make such a difference.

Hi Andy, Very interesting video. The manual is not too clear about the problems with ITB setup and tuning. Please bring a video that goes into more detail on tuning ITBs and what is their advantage. I decided to get Jenvey ITBs on my Jaguar V12 but after watching your video I do have some doubts if it was such a good idea. Greetings Bernhard

Great info, many thanks for posting

Andy, Nice Video, please do more (eg Tuning ITB to japanese sports bikes) Link G4+ 4D Fuel Tuning

Hello Andy, if i have a rb26 (itb+turbo) should my right curve be flat at 50%? Or slightly opposite to your setup? Ie: above 90kpa use SD and below 90kpa use alphaN?

I have already added a comment regarding my doubts, but my hint to anyone dealing with ITBs on Megasquirt: build and airbox around them and use a proper calibrated MAF... at that very moment you have a very accurate MAF load for fuelling and igniton...

would this work on an ITB+Boost application? Or should i use a dual table setup and blend the maps to each other?

all you have to do in an ITB conversion is to simulate MAP and IAT readings (yes there is a way ....) i have managed a 16v 4age with 20v silvertop itbs tuned 100% perfect with just a super afc (apexi) perfect idle with 15.0 afr smooth acceleration with 14-15 afr and 12.8 -13.2 WOT from 4000 rpm up standard ecu compression 11.5 4/2/1 headers + 50mm exhaust system with 200 cpsi cat + 1 silenser car has a perfect cold start at 1150 rpms with 13.5 afr for about 2-4 minutes depending on the weather ... then back to 850 rpm . car makes 155 bhp can travel can commute can race . average consumption for commute is 7 l/100 klm its nice to be an engineer......

long shot but can a itb be setup in any motor? i know intensive modding would be have to be done but i have a spare 2000 mustang that i wanna work on and thought this would be unique as i haven’t seen one with itb

4:57 Pipe Organ 9:31 The meat of the video " ITB motors have a huge VE increase as the throttle is opened" 13:27 At 2000rpm achieve 90Kpa at 15% throttle

Thanks for this excellent overview. ITB tuning is not discussed much. Was hoping you'd discuss iac on itb's.

What are the symptoms if your throttles are out of synchronization

How do you know from the log where the (>) greater than and (

Hi, Sir. I just want to know if it is possible to install it in a 2e engine?

I realize this is an old. Video at this point but would you. Be able to answer some questions, I'm having a few issues

Good work!!Thank You.I have loose many time for understand ITB settings..Just You're explaining video give me chance finished work to my bike.Can You give me a contact to You.Have some another question of MS.Best regards from Ukraine.

Was interested in running ITBs on my Miata but can’t find anyone in Louisville to help me figure out which ones to buy or how to set them up. Do you know of anyone in or around Kentucky, Ohio or Indiana that can help?

Hi, if you want to understand what is happening in the ECU, the explanation in the video does not really help. :((.. 1.)let me start with the fact the that collecting that 90kPa vs TPS vs RPM curve from datalog is practically impossible on a fresh untuned engine.. who would run those loads/RPMs if you just started setting up the ITB? 2.) the ITB settings panel together with the instructions (both on the GUI and from video) is just a recipe but does it make any sense? the left curve shows a TPS percentage at certain RPMs which resulted in 90kPa..ok so what? will that be the switch point to jump from SD to Alpha-N? no answer on that.. 3.) the right curve is a bit clearer.. ITB Load versus RPM to decide if we are going go SD or Alpha-N. But what is ITB Loaf..is it TPS%? if yes, this whole table is just overrides the one on the left side..one would be enough :(.. or what is it MAP? My best guess is that yes, it is MAP load and then you do not directly use the TPS switchpoint curve (from the left table) but you will modulate it with the right one...*somehow.. but how? neither the video nor the manual has the answer. my 2 cents.

very good info!!