Originally Posted by
aznitronut
I have tried the JP-2 with the conical header, medium length, on the 5 port, and it works great. Good smooth bottom, and linear all the way thru. IMO.
The 7 port engine is normally a top end engine, with poor bottom end, the 053 gives it great bottom, and lets the engine wind out for top end, when you go to the 3 or 5 port engines, they already have good botton end, and if you run a short track, the 053 may get by, but in any medium to big track, the 053 just tops out quick and has no more top end power.