Mazda Talk Forums

Brian,

Just wanted to thank you and your team for the fabulous support you've provided while I was deciding on the Edelbrock SC. I picked her up this morning from Rocky's and haven't had much seat time yet, but so far it's awesome.


Morning sun....crappy picture, but I love the way the SC looks in the engine bay, like it's stock.

Brian, any thoughts on the surge issues with the CARB tune that are being discussed on the Miata Forum? Have you experienced it with your RF setup? I'm still on the fence between the EB CARB kit and the BBR. Thanks.

I went looking for it and did find a little, but you need to drive like there is a delicate egg under your foot to find any and even then it is so little that my wife says she doesn't notice. Driving with a light right foot is really never my style, on the hundreds of miles on freeway for Laguna we noticed nothing, only very light throttle between stop lights can I find it with very light throttle. Edelbrock is constantly updating the tune, just got the latest for my wife's car to try when we get the chance, perhaps next week.

That's good to hear. People have been losing their minds over at Miata-Net over the surging issue.

People at miata.net are losing their minds about something? I can believe that. Haha!

Imho I think a lot of people are blowing this slight surge issue way out of proportion. I didn't notice it at first given my driving style. After reading the thread, I had to intentionally go look for the specific pedal/throttle position that caused this issue. It seems to only happen if you keep on a particular throttle position in 2nd and 3rd (holding arund 3.3-3.4k rpm for an abnormally long time), which imho you normally would not stay very long in for almost all your driving, unless you were specifically looking for this issue. I had to go hunt for this problem...

That said, Edelbrock sent me an updated ROM this morning. Whatever slight surging there was, is completely gone now with the ROM they sent to me. I tried hammering to find it this morning for an hour, and wasn't able to reproduce it.

All that said, I guess it was a good thing that some folks complained as EB felt it was worth fixing.

More Kits In Stock...

And installs daily here, another almost complete today!

Update Dyno on Edelbrock Tune, best result to date for the Edelbrock tune that continues to improve and improve. Result is so close to our best custom that I cannot recommend custom at this point just for 4 hp more peak (essentially the same result) and Edelbrock's tune has the warranty.

And here is latest result for the RF over best stock for this particular ND, up over 60hp. I do have version of the calibration now that bumps redline back to stock 6500 rpms, this car was set lower during initial testing because it was one of the original Edelbrock installs, had not rushed to put that redline back to stock since power is dropping off in the last few hundred rpms anyway (fastest driving result as we proved at Mazda Raceway Laguna Seca and first SCCA win is driving the torque curve which is best 3000 to 6000 anyway).