I wonder what ITBs built into a plenum with a turbo would be like. Assuming you could tune it.

 

That's true, but my worry with a turbo is that it is still going to give a huge power boost up high, which I don't need and in some cases don't want.

I agree with your point about RPMs falling--I'm talking more about autocross, where the corners are very slow. I can either lose half a second downshifting to 1st, or lose half a second accelerating from the low end of 2nd. Either way I lose

Oh yeah, I'm not in TX anymore...I moved to Seattle and forgot to update my profile...

 

Actually, I have a lot of questions about ITBs. A Miata guy I know pointed me at fuji-racing.com; the guy there has a Miata kit (~$3,000 incl. ECU) and is working on one for the S2000. Several Miata guys have also made homebrew setups by using GSX-R ITBs and fabricating the rest for an end cost around $1000. I've heard that the ITBs from Honda bikes can be plugged into S2000 wiring harnesses. My point with all of this is that we can potentially get ITBs in our cars for much less than the $6-7K that (I've heard) TODA charges.

So here's the question: is this the right place to talk about ITBs? I couldn't find any other recent threads when I searched. Would it be better to make a thread outside the regional forums?

 

If you're losing that half a second in the low end of second, yet again, you're not fdriving it right... your rpm shouldn't be so far down in the band that a turbo wouldn't be spooled up. If you really need to drop that low, you shoudl be shifting into the next lower gear anyway. As far as too much boost up top, well, just program the blow-off valve to open at whatever pressure/rpm you desire... quality tuning will get you a very smooth power curve. If you have a sudden peak in your power curve that throws off your drivability, you're not tuning it right.

And Seattle is an even LONGER drive than TX




straun, there's no such thing as a plug-n-play solution, especially for the S. At best, you will be able to find a less expensive ITB set, but you'll still need all of the aftermarket hardware to tune it (i.e., ECU). Once ou spend the time attempting to integrate ITBs from another vehicle, you're often better off going with something pre-made. True, I don't believe they're worth $6k-$7k, I'm sure they could be manufactured and sold for half of the price (especially now that a design exists that can be copied... and will be).

 

You're right, but getting my 2 -> 1 downshift fast will take a lot of practice. 1st is so unforgiving that I would have to revmatch perfectly while heel-toe shifting, which is beyond my skill. I do know that modding to "fix" a deficiency in skill is a bad idea, but that's not the only reason I'm interested in this.

Oh, definitely. I had just heard that the bike ITBs could plug into our wiring harnesses--you'd still need to fab a manifold, trumpets, velocity stacks, etc. That sounds like a good project, but it's way beyond my experience. I'm sure there are people on this board who would be capable of it, but for me a pre-made kit would be the best choice.

That's what I'm hoping to see from Jimmy at Fuji Racing. I'm going to email him to see what the progress is. If people here are interested, I'll update with whatever I find out.

 

I have talked to Jimmy personally face to face when he just happened to be at a local shop(with his Race car) in Daytona Beach where my Mugen stuff came in(1 year ago)

He is very knowledgeable when it comes to ITB

 

[QUOTE=deppenma,Apr 25 2006, 09:29 AM] I have talked to Jimmy personally face to face when he just happened to be at a local shop(with his Race car) in Daytona Beach where my Mugen stuff came in(1 year ago)

He is very knowledgeable when it comes to ITB

 

it not always about peek numbers
throttle response has a lot to do with the driving experience
You cant beet ITB's when it comes to Throttle response.

 

exactly. many people dont understand that its not all bout HP, its response. Thats why he excels in AutoX.

 

So basically, before I were even to think about getting a set of ITB's, I'd need an AEM EMS or equivalent, right?