Oldschool said:If the 40mm throttle body diametre is the only thing that matters then someone explain to me please how the Radical SR9 with its 3000cc engine produces 525bhp at a reasonable rpm as well as having a torque output of 273 lb ft? Even more so it brethes through a 44.7mm restrictor. And no, it is not forced induction, just normally aspirated.
There is much more to it than just having a larger throttlebody.
Sure there’s more to is than just a larger TB.
A big engine with more than 8 valves, better cams, lightweight engine internals and externals. A good gearbox with less resistance, higher revs. and so on….
A larger TB is only a step on the way.
My 40mm TB is an exact fit and a very easy swap - it delivers 10% more power (both torque and HP) to the standard engine without a re-map – guaranteed!
Se before/after rolling road printout bellow
10% more power for 120 euro + 30 Euro in post charge - where can you get that elsewhere??
All the members of fiatforum.com who already had this done are very pleased with the performance of the 40mm TB
Let us hear them speak up
One of them started this very thread you know
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