Wow. I missed this one.

IF you have a 99 or newer MAF you may get away with it. My L67 did NOT like this mod at all. It flowed more than the stock MAF sensor could even read.

Throttle response is greatly improved by simply shaving the shaft flat on both sides and using counter-sunk screws. This kills some turbulence and opens up flow BEFORE the MAF sensor.

I still have my Maf-supportless TB from Zilla'* old Gen2 setup. It'* a good paperweight now.

I'm thinking the 97 vs 99 are different to factor in the lack of support in the airstream. Wonder if anyone has the frequencies and we can get a comparison.

Sounds like a custom tune to get the most out of it.

Someone holler "Thomas" loudly..

Ben..I'm sure he'* seen some experience in the GP community.

Lol... we don't need to pull Thomas in here yet. I know he has the capability to tune any TB I throw at this car, because he has a wideband O2 that we can put in the exhaust to get the A/F ratio down perfectly. So that'* not a problem. I just wanted to know if anyone had scanned their car before and after a ported TB and noted the MAF frequencies. Honestly I doubt the frequencies changed at all, but I thought it would be nice to check. It'* good to hear that Mike was able to dial in his LTFT after a heavily ported TB because it means overall the fueling was good despite the MAF being out of calibration. But like Bill W. mentioned, it does no good to outflow the MAF because you end up with a car sucking more air than it knows how to use.

Ben, one of the ZM test cars will be doing this very shortly. He already has on of my ported TB'* on the car, and stated he would be willing to go back to stock for some numbers.

Another L27 test car will be doing this shortly. MAF gm/sec data at 3 or 4 different rpm levels with the OEM TB, then swap and repeat.

Unfortunately, The other test cars haven't tested, but all did report a snappier throttle response. It'* interesting that the NA cars seem to have responded more, and feel they gain a bit on the top end at WOT. My own car wasn't tested for this, as I did a ported/polished SC and LIM at the same time as the 2nd 'test' TB. I still have that TB around here somewhere as well.

My Gen3 setup also netted no quantitative results, as I did other work at the same time.

That would be great, Bill. I'm anxious to get a different TB on the car because I think it'* a restriction at this point. I have no hard data to back it up, but if you look at the burnout video after my trans swap you'll notice a slight delay between when I go WOT and when the engine spins up. My engine doesn't like to speed up in a hurry, so I was thinking a ported TB might alleviate some of the problem.

I also feel my TB is a restriction. I think that a TB would help my 60'* alot and also help my trap speed. But at this point i just cant see spending $200 on a TB when i can get a HV3 for that price. Do you guys think i would see noticable gains from a ZZP stage 1 TB with my mod level?

Dame do you still have the post-less TB from the 93?

Most machinists probably wouldn't charge more than 50-60 bucks to shave the throttle shaft and countersink the holes for flat head screws like I do.

My pics are all the guide you need.