Black GT

I have Brenspeed tunes for my Mustang and have visited their shop. Brent is a good guy.

I also have VMP tunes for my F-150.

Haven't had any problems with either one.

Ford_Dude

BTW do you know which parameters are normally data logged?

I was thinking of data logging with my OBD2-blue tooth device and android app.

Black GT

I don't know if you're asking me, but I've used Log Works software for data logging along with a Innovate Motorsports LC-1 wideband O2 sensor. I use the LC-1 to provide an accurate A/F ratio while driving.

I'm not sure that you can capture an accurate enough A/F ratio for tuning purposes by your method without a wideband O2 sensor. With the narrow band O2 sensors the car uses you could tell if you are richer or leaner than 14.7:1, but you can't tell by how much.

kevinmalec

I've been very satisfied with my Brenspeed custom tunes, however I don't have any other custom tunes to compare against. I pass emissions each year, that's a huge plus!

Gaines09

I don't think I have to worry about emissions here in georgia lol.. I'm from arkansas and they never do inspects either lol.

808muscle

For bolt on's brenspeed and bama are perfectly fine. Dont waste your money on a dyno tune. I have nothing but good stuff to say about brenspeed. Their tunes have won me trophies.

outceltj

Brenspeed has great tunes and great customer service. They have a deal similar to american muscle for tunes. Any part u buy from them comes with a free tune. I have enjoyed working with the team at brenspeed. Another plus is that they basically use or have used every part they sell. They race every year so they have first hand knowledge on what certain parts can and can't do in real world situations. Not just on a Dyno

moosestang

I doubt you will do better than your americanmuscle tune. I've never gotten a tune from them, but if you feel it's not right, they are very quick to try and fix it. My first tune was from brenspeed. Then I used the canned whipple tune for years after installing the blower.

I got a tune from brenspeed for the whipple and the part throttle was so much better, but I thought maybe I could do better. I tried a tune from vmp tuning, but it was never as good at part throttle acceleration as the brenspeed tune. Brents tune just had better driveability.

Gaines09

Well this is how I'm taking it so far lol

Brenspeed > american muscle > lethal performance

Nobody has really said anything about lethal performance's outrageous prices. haha

S197GT07

Lethal has their tunes done by lund, hence their prices.