Stay away from the JP1,2,3 pipes when running Werks engines. I've run my share of B3s and B7s and I found they'll work OK with JP pipes but they are far from ideal. The JP3 is the best of the bunch but still one of the worst pipes to run with a Werks engine (oh ohhh I'm gonna get me into some trouble with that statement I'm sure LOL
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If your bud MUST have a "tough" pipe then Carolina's RC has a hard coated Werks 2013 in stock! Be prepared for sticker shock though as the pipe/header combo is $125!!!
https://www.carolinasrc.com/webstore/sc ... oduct=4752
Otherwise I'd go for the new Dynamite pipes. They're hard coated with reinforced stingers. And CHEAP too! Like $49.99 for the hard coated .86! The .86 makes great power on both the B3 and B7.
https://www.carolinasrc.com/webstore/sc ... oduct=3624
But that 2013 man... it makes GREAT power! As far as power production is concerned, the 2013 is IT! Works awesome on Werks/Collari, Sirio and OS RG engines. A friend of mine put a 2013 on his OS RG powered SP2 and let me tell ya, that RG became a whole different engine! I drove it (at my buddy's urging!) and would have never believed that it was a Bone stock OS RG if I didn't see it with my own eyes! It transforms the RG from an excellent sport engine to some cheap V-Spec like thing! It's all he's gonna run for now on. He's selling his Werks B7 Pro and V-Spec because of it
In one word.. unbelievable!
regards
speed metal