Just to let them know the interest is real here

With all the holidays around this time of year I wouldn’t expect them to be prioritising this r&d. I wouldn’t expect anything until next year

Guys, have some patience. Is not like if they're coming out with the results you will be getting the ITB set up the next day so relax. Plus, they are a business so they need to maintain the daily running/sales/etc to continue running as a business. And testing comes second. You want faster results? Buy the kit and do the research and testing yourself.

I want answers too by the way, so hurry up damn it :)

Delicious Tuning - Any chance you are testing these combined with some aggressive Piper Cams???

I suspect initial results weren't that good. We saw same thing happen with velox intake manifold.

^ you're probably right.

Time for the revolution dual ram intake!

Time for a turbo!

Reading the comments on CounterSpace Garage's instagram posts, someone asked for numbers, and they responded with, "let's just say we will prefer to keep the ITBs on the car."

Sounds like they got some kind of result out of them. But like others have said, I imagine they are doing thorough testing before releasing any public numbers.

Are they doing NA testing?

As far as we know

Interesting. I love ITB's as far as race car type engines but I can't imagine that these in an NA config would make anywhere near the amount of performance gains to offset the price of getting them.
hopefully I'm wrong though

Same bro. The itb's with tuning will probably cost the same price as a turbo kit with support mods. That alone tells me it's not worth it NA style, trust me im NA and i can beat turbo 91 tuned twins. I'm gonna go with the revolution dual ram intake and bigger throttle body at half the cost and probably very similar numbers to the itb's.

Exactly. Just because they made a measurable improvement on the test mule and there's no point in taking them OFF now, still doesn't mean they'll be worthwhile doing in the first place. I mean, I could be wrong and they end up being wildly effective, but I suspect the results will only attract the small handful of people at the pointy end of the scale who are willing to pay thousands upon thousand for single digit increases. I also hope testing was done with nothing other than the ITBs and tuning, rather than included with 5 other supporting mods which also could be applied to any other non-ITB setup..

It's also possible, that while insufficient gains NA, but improved on forced induction, as reason "not taking off". Well, we can only wait for data, until then it's just guessing game.

Some people will spend the money to have most power available na. Cost/gains won't make sense but that hasn't stopped anyone yet

It that their test configuration? A F/I motor? I missed that part...that really wraps it up for me, then.

True, but like I said, those people are pretty rare and at the pointy end of performance where 4-5 horsepower might make the difference between podium and non-podium finishes. In those very rare cases, it will certainly be worth the expense.

I think it's worth mentioning that the ITB testing is being done with an intake manifold and runner length that may or may not be optimized in shape and length. ITB's make it easier to test different runner properties, so the conclusions may change down the road as more experimentation is done.

We don't know that part yet. It's just blogged text without useful extra information. So nothing changes in addition that we just need to keep waiting for actual results/more detailed nfo to be released :). Are there gains? Are there gains on NA? Or with FI only? Are gains of reasonable price/performancy? Nothing known yet. I mentioned FI only in way that i'm sure that both CSG & DT worked a lot with both misc FI & NA setups in past.

im hoping this is for NA. If your FI you can always just add more boost or getting a bigger turbo ect for more power.


Even if its only 10hp/tq through the powerband over an Ace350 setup would be good enough to take my money. 10 hp/tq to the wheel goes a long way in my setup where my car is down to 2400lbs

You can easily beat 91 tuned turbo twins and some 300hp cars. Trust me, i know. Lol

If people are calculating HP/$, they should just move on. These will likely cost a cheap turbo kit all said and done.


If you're looking to maximize your current NA setup and/or looking for the best throttle response and breathing on the intake side then I suggest you stay tuned for an official response from delicious tuning.



There are a lot of people jumping to conclusions here with out a lick of info.

The RB26DETT motor in the Skyline GTR had ITBs, so it is reasonable to conclude that ITBs are beneficial on FI applications too, but probably for throttle response. I believe there would be gains on FI applications if the stock TB is a point of restriction on top of the improvements to throttle response.

I have a Harrop kit, so I follow Harrop's 86. They have a 2.L stroked/built motor running a TVS 1320 Harrop SC on E85 at 400+whp. I should preface the following by saying that this isn't definitive evidence that a larger TB is necessary, but nevertheless, you can see below that they went beyond their normal kit by making an accessory pulley system, so they could run a larger TB. This suggests that a larger TB would be beneficial in higher horsepower FI applications. By inference, ITBs would also be beneficial.

http://www.fullboost.com.au/fb/index...rz-lap-record/

ITB's may have gains, but the primary reason is always throttle response.

After NA testing is concluded, my ITBs will be going onto my GReddy turbo car.

The ITBs are mine, and on loan to CSG/DT so they can play with it NA.

It'll be a while, as there's talk of getting different sized trumpets to see what can be done without a manifold as well.

Given the sticker price they should be at least close out of the box imo

In 3 years, the price will be down to $1500

If f.i. kits come down in price as well...

I was just calculating things for fun. The stock 65mm throttle body has a cross sectional area of 3318 mm^2. Running 48mm throttle bodies (x4) would be a cross sectional area of 7238 mm^2, so more than double. This would be a rough equivalent of running a single 96mm throttle body, which is bigger than most muscle cars (the Hellcat is 92mm).

Obviously the intake pipes reduce the potential diameter, but it means there is plenty of size to these ITBs for big power numbers.

It's not only a factor of just multiplying the cross section of the throttle. There is a lot more to it than that.

Although crude and simplified this is a good intro to throttle bodies.

[ame]https://www.youtube.com/watch?v=uS3yHPfT9I8[/ame]


A runner/manifold/single throttle application will never be able to match the response of ITB's.


Once you factor in resonance tuning and trumpet/runner length it becomes a wash.

I was calculating cross sectional areas for a rough comparison, as it pertains to what I was talking about a few posts up, which was that a large throttle body has been used in FI applications because the OEM throttle body can be a bottleneck. It was definitely a rough calculation used to illustrate the potential benefit this kit would have with FI, and again, this was brought up to give reasons for why this kit would be beneficial for FI applications (besides throttle response) because some mentioned it wouldn't have much use. An aftermarket TB would be a cheaper alternative to this kit if all someone wanted was to change the bottleneck that is the stock 65mm TB, but I mentioned it nevertheless.

If the stock tb is a bottle neck, why do larger ones make less power? Oops, you mean on f.i. setups.

Exactly! I'm optimistically hoping they make power, but in the end, I just want a positive driving experience. If a unique sound and instantaneous throttle response makes my personal driving experience better for an NA setup, then I'm all in.

I've never driven a vehicle with ITBs, so my curiosity for them is at it highest now that I might have the opportunity to try it.

^^^ Thinking/typing out loud??? Weird.

I'm also an asshole.

How?

Any results from the ITB testing?

This was just asked last week

Any results from the ITB testing?