LingLong

I think everyone is on the money. Ive been nutting it out way too much haha. Im just gonna do whats easiest and most cost effcetive for me atm and keep the itbs. Some good advice from everyone. Time to get on with it

Thanks for your replies, It looks like sticking with the itb setup seems to be the most practical but I am still considering a single throttle, I must admit I think stb looks much cleaner. I am wondering if anyone has any experience with running both itb and stb on their turbo setups? was there really any noticeable difference between the two?? I guess a comparison would be between 16v 4age turbos vs 20v 4age turbos with itb. Although they are possibly quite different. Best inside info would be from someone who has run both itb and stb on the same setup! Here is a fap pic of the possible single throttle setup I would possibly go for.. So clean, love how beefy it looks too https://www.instagram.com/p/BF-mscnnMVM/?taken-by=ken_ola_oil I am curious if, (with single throttle) on throttle and off throttle response is really going to be affected noticeably at 14 psi of boost and high rpm engine braking. Are there any calculators I can use to see what the actual difference in time there will be to fill and consume the volume of a larger single throttle plenum. If it is some tiny amount of time then I would consider the benefit of itb response to be negligible! Another fiscal question... Would the sound of the engine change if I went stb? Just curious! I have been hunting around on RB26 forums but they seem to be hunting for big power, not many people talking about street/circuit applications and nobody seems to have a direct comparison of both.

Hey guys! Im new to the forum and working on cars in general. My AE86 Levin has recently been stolen and luckily recovered. Anyway, a rebuild is being planned and I am wanting to use this time to upgrade bits and pieces etc. Something that has been on my list is to upgrade the current intake setup as it can definitely be improved upon. Currently a 20v head with itbs and crude plenum. My question for you experienced 4AGTE folk is, do I keep the itb setup and get a new plenum, or do I ditch itbs and go for a single throttle? For my build I am aiming for good response and a decent power range, Im not looking for big top end power numbers and would rather have more useable power throughout. I would like to know with peoples experience the pros and cons of either itb or single tb? To keep the itb setup would probably be cheaper and easier as all i have to do is bolt another one on. But in the long run is tuning and maintaining an itb setup a big hassle? I seem to hear that they are touchy and high maintenance but can pay off if you are after that little bit more performance. If I were to go single throttle I would probably just bite the bullet and get an MRP plenum which is pricey, plus extra expenses of top feed injectors and whatever else is needed. Will this be a lower maintenance setup, can it perform better than itbs? who knows? Not me!!! Engine bay pic https://www.instagram.com/p/BF78vdrnMcc/?taken-by=ken_ola_oil&hl=en