Originally Posted by MantisWorx

Yes the ISON is the best overall choice, especially since your track is going by ROAR rules!
Here in houston (my home track) the 9 ports rule and have the fastest lap and qualifying records at every event this year ( i know because i have had the TQ and fastest lap at both of them and in Brownsville with a 9port!!) . The straight is 260 ft but you go into the straight at a higher speed than homestead! If your car is setup good you are full throttle immediately after the timing loop where as in Fl you go into the straight from a very sharp turn. We get the same speeds here in houston that were run in Homestead!

The class is still evolving and we as a group are figuring out how to make these cars fast!! Just look at how much quicker GT was in FL than last year!! 2013 fast lap was 19.89 and i think only 2 guys did it , 2014 that time got pounded down to 19.2 with a handfull of guys running mid 19's It was very exciting to watch Paolo and Scotty grind it out , incredible actually!


More food for thought on the port debate, in FL the faster sportsman guys were still running 54-56mph on speed and the majority of the pro guys were running 55-58 MPH Paolo and Scotty were able to crack of a few 60-61mph speeds. Some of the sportsman lap times crept into the mid 20 sec range which is also where the majority of the pro class car were ( i had engine issues but my fastest lap for the weekend was 20.01) So you have to ask yourself this question, If a restricted 5port can get within a few MPH of an unrestricted 9port then why run a 9 port? and why did no pro run modded 5ports? I asked this question myself and was told simply "9 port novarossi engines are faster all around than the 7 and especially 5 port, its that simple". when you restrict an engine(via smaller venturi) you dont lose top end you lose bottom end) , the engine will not wind up as fast with a restriction, thats just how engines work. max RPM is max RPM a restrictor will not change that, it will however slow down how long it takes to get there. SO in laymans terms a restricted 5port will not have more bottom end than a non restricted 9 port!!