Havent used one myself but have read about them.
AFAIK: they are just as up-rated spring to provide more oil pressure.
Some guys just stick a 3mm washer under the spring to get a little more pressure.
If you are going all out on the engine it may be worth it. But $90 ....... like i said some guys just stick a washer under the spring to do the same job.
I havent done anything to my pump and i have fairly good oil pressure considering the large bearing clearances i run.
I will prob be putting a washer under the spring next build.
Anyone out there with a hks oil pressure spring or a washer upgrade for that matter ???
How do you find it ?![]()
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