I'm going to get a boost cottroller and was set on the Hallman but I was recommended the grimmspeed solenoid.

Can you give me any advice? Thanks

Hallman will be plug and play and the grimmspeed will need to be set up and tuned with. At least that's the understanding I have. Just make sure if you use the hallman don't set it any higher then the boost you are tuned for currently. I actually just bought a grimmspeed and I'm waiting for the car to get tuned so if you decide on a hallman let me know. I have one that needs a new home now.

Grim speed sir I have a spare hallman and will probably never go back! Great product!

Well that a very big topic and decision. Read the following threads.

https://www.evolutionm.net/forums/ec...ly-debate.html (First post is Pro MBC, but the whole thread discusses MBC vs ECU Boost.)

https://www.evolutionm.net/forums/ev...ntrol-one.html

use whatever your tuner prefers. both work well.