I built my own carb using the hanger 18 mods website. I drilled my PVCR's out to 3/32nds and jetted up the secondaries and have been very surprised how well it has treated me. Under 10lbs of boost it just starts to go lean but I think a jet change will iron that out. My only complaint is right off idle and part throttle cruise the thing runs so rich it'll burn your eyes and I don't want to step down on the jet in fear of going lean before the transition to the secondaries so I've just lived with it. All in all it hasn't been the nightmare some have talked about. My car is not the most powerful boosted car out there but I think It's making around 375-400 at the wheels with a stock 318 and homebuilt carb. I have yet to take the car to the track because of transmission issues, but I've racked up 4-500 street miles with my blowthru with no issues