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I would be curious to take out the headers on a TBS and a TB to see if there is a difference there other than the crossover.
I had a long conversation with the chief of service at a local shop here. He is the one who finally convinced me to put the cams in because the price was quite right. According to him the biggest restriction to increase the HP will be at the headers. Just for the sake of it I will look at the headers on my Sprint to see if it would fit.
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The crossover would make a big difference with the stock silencers. That would provide up to 4 times the exhaust flow over the system without the crossover. The advantage of the crossover is decreased somewhat with offroad silencers since the restriction is much less.
The Sprint headers will bolt to the engine with no problems but you'll probably have to fabricate hangers for the silencers. They should provide a substantial high-rpm power improvement over the stock system in conjunction with the Sprint cams.
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I would think that the air box filter is the same on both but I do not know if the TB has the extra air chamber connected to the air filter box. English is a second language and I am missing the word for that extra box. (caisse de raisonnance)
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I believe both models have identical intake systems and I think the word you're looking for is either "resonanant chamber" or "resonator."
The big difference between the Sprint and TBS is the cams. The Sprint cams have greater lift but with the stock filter box that's not as important as the longer duration and greater cylinder fill time.
It will be quite interesting to see how it all works out!
Jim
