Here is a good question...

[Kazz]

Has anyone here or heard of someone else using a snorkel type Ram-Air set-up on a TLS, not the TLR. I was thinking about changing my mind on the bigger airbox with the stock tubes. I think I might, over the winter find a used tank and cut a hole through it just in front of the filler cap. It would need two ram air tubes that run from the left and right sides above or through the windscreen to meet up and run through the tank and into a large airbox. It wouldn't look stock anymore but this would solve the SHIT location of the ram-air tubes. Bimota did it with the SB8R and Honda's EVO Blade. And of course Kawi with the early 7R. This would solve all the problems of getting more air into the TLS. I know, why not buy a TLR and mod it out. I like the TLS for what it is. I would still cut the throttle bodies down. I remember reading about the R1 snorkel bike that one of the American magazines covered. The thing was a bullet but they disqualified it because it wasn't stock. They had some early issues with jetting but finnally sorted it out.
SO, if anyone has a spare tank laying around and would like to donate it cheap I would be happy to get the job done and test it out. Oh ya, will a TLR tank fit on a TLS? Has anyone ever tried it out. It would make the search for another tank a little easier.

[Steve TLS]

I think the early ZX7's had the vacuum cleaner lines for show, it wasn't a true ram air / sealed airbox.

My 89 GSXR has two airtubes as well, one blew air past the fuel tap, and the other went close to the rear facing airbox inlet. .

What's shit with the air tube location now? You'll have to work hard on filtering too. You know even if you put a funnel shaped scoop on the front of the bike 3 foot in diameter and fed it into the airbox, you get no more ram air or airbox pressure?

[Kazz]

You think the stock ram air set-up is a good one? I don't. Every other system I have seen has a straight path into the airbox. Or as straight as possible. You don't think a snorkel type system through the tank would be better? It has to be better. I want to use the stock filter and mount it on the bottome side of the tank, upside down and run the intake in through the top. You did the (Joe V) mod to your airbox and dynoed it, right? And it still has a terrible intake system. The air has to run a long distance, then a 90 degree turn and then another90 degree turn which runs into the other intake and up and into the airbox. Don't you think if you gained some HP with the (Joe V) mod it would surely gain some more with a snorkel set-up. And thats a gain on the dyno, no ram-air efffect what so ever. I guess we won't know untill I try it out. The intake runners might only be slightly bigger than the stock ones but will be shorter and more direct with a large capacity air box.

[Kazz]

What about the TLR and TLS tanks fitting the same mounting points

[Steve TLS]

The Joe V isn't appicable to the TLS, but I have a modified airbox. (no flapper and opened up bottom, but still sealed to the air tubes) When I ran it on the dyno, I got no difference with the filter in and lid on compared to the lid off an no filter.

Sure it might be a shit design, but I don't think the benefits will come even close to being worth the hassle, that's all. (If you get a benefit at all.)

[TLDV8]

Originally posted by Kazz
What about the TLR and TLS tanks fitting the same mounting points

I have no idea if the fuel tank's interchange.. but.. Performance Street bike piggybacked a data logger to a 98 TLS ran it on the road to somewhere around 200kph and found the pressure difference in the airbox was almost the same ... with a K&N,BMC,stock filter.... and NO filter... so it would appear the major problem is not in the box but at the entry for sure.... With something like twin 40mm inlet valves and "big" inlet port it doesn't make sense ..... Being a Newbie here i have no idea of what has been discussed in the past ... but the airbox on the TLS has a small volume.. there is no reason that the TB's can't be inside the box,a lower floor would increase the volume,the fuel tank could be the roof... like Ducati use ...... depend's on how much work you want to do,even with a major airbox rework the stock intake tube's would still flow a lot of air... guess it depend's on how much you want to straighten the flow path to the TB's and if the gain is worth it on a stock head road bike.