TCB91GSX
Proven Member
- 258
- 240
- Jan 11, 2021
-
Denver,
Colorado
Hey y'all,
I just picked up a Hallman Pro BC to replace my eBay one that works perfect... I put it on last night and went to dial in the boost, it took about 4 full turns before I was able to get past the 6 PSI mark, another couple turns I make it to 8 PSI. Another couple turns, I make it to 10 psi. I am shooting for a 15 psi target. I got frustrated and stopped at 2.5 turns to go at 10 PSI as it was clear I wasn't going to get where I needed to go...I purchased this unit second hand from a member on here. I am pretty sure it has the stiffer spring in it as it also has the steel ball.
Can anyone verify the difference in springs from the picture ? Included the picture from STM Tuned, the stiffer springs "look" very similar...
The spring on the left is a stiffer spring I got from HD and looking to potentially swap in depending on answers. The spring on the right is the HBC spring.
Could this be anything else other than spring rate ?
I put the original MBC on and car was at 15 PSI, no problem.
Let me know what y'all think!
Thanks!
I just picked up a Hallman Pro BC to replace my eBay one that works perfect... I put it on last night and went to dial in the boost, it took about 4 full turns before I was able to get past the 6 PSI mark, another couple turns I make it to 8 PSI. Another couple turns, I make it to 10 psi. I am shooting for a 15 psi target. I got frustrated and stopped at 2.5 turns to go at 10 PSI as it was clear I wasn't going to get where I needed to go...I purchased this unit second hand from a member on here. I am pretty sure it has the stiffer spring in it as it also has the steel ball.
Can anyone verify the difference in springs from the picture ? Included the picture from STM Tuned, the stiffer springs "look" very similar...
The spring on the left is a stiffer spring I got from HD and looking to potentially swap in depending on answers. The spring on the right is the HBC spring.
Could this be anything else other than spring rate ?
I put the original MBC on and car was at 15 PSI, no problem.
Let me know what y'all think!
Thanks!