TPI fuel pressure regulator torx bit?
Thread Starter
Melting Slicks
Joined: Aug 2003
Posts: 3,413
Likes: 404
From: Lakeville MI
TPI fuel pressure regulator torx bit?
I'm thinking of shimming my stock fuel pressure regulator with the old coin trick, for a bit more pressure (46 psi currently). I figure a nickel or dime under the cover will add a few psi. Or if all esle fails a Swedish Kronor, which is about as thick as a nickel and dime. Skoll!
I'm too cheap to spring for an adjustable regulator if I can do the same thing fwith a dime.
I do plan to raise the injector constant in my chip to compensate for the added pressure/flow. I'm seeing around 880 mv in third and 900 mv plus in 4th so the AF is in the ballpark, but my injectors are running static much of the time. I need more pressure, so I can knock down the duty cycle a bit and open up some more tuning options.
First, I gotta pick up an appropritate tool to pull the cover. The fasteners are a small torx head with a central pin. Looks to be about a T-8. Anyone know the size, before I go shopping?
Thanks
Update: Ok, they're called Security Torx bits and sears has a set that goes down to T-10, upon closer inspection, It looks like a T-10 on the regulator. I'll post back with my pressure vs. coins results.
I'm too cheap to spring for an adjustable regulator if I can do the same thing fwith a dime.
I do plan to raise the injector constant in my chip to compensate for the added pressure/flow. I'm seeing around 880 mv in third and 900 mv plus in 4th so the AF is in the ballpark, but my injectors are running static much of the time. I need more pressure, so I can knock down the duty cycle a bit and open up some more tuning options.
First, I gotta pick up an appropritate tool to pull the cover. The fasteners are a small torx head with a central pin. Looks to be about a T-8. Anyone know the size, before I go shopping?
Thanks
Update: Ok, they're called Security Torx bits and sears has a set that goes down to T-10, upon closer inspection, It looks like a T-10 on the regulator. I'll post back with my pressure vs. coins results.
Last edited by tequilaboy; May 27, 2006 at 03:08 PM.
Melting Slicks
Joined: Oct 2002
Posts: 3,193
Likes: 1
From: Cincinnati Oh
I believe it's a T-10, but could possibly be a T-15. If you want to wait for me to get home, I'll double check.
If you haven't already, I'd recommend buying the torx bit set from Sears - it comes in handy.
If you haven't already, I'd recommend buying the torx bit set from Sears - it comes in handy.
Melting Slicks
Joined: Oct 2002
Posts: 3,193
Likes: 1
From: Cincinnati Oh
Thread Starter
Melting Slicks
Joined: Aug 2003
Posts: 3,413
Likes: 404
From: Lakeville MI
Update: Its a security torx T-10.
With a nickel added under the lid (no vacuum): 54 psi
Previously (no vacuum): 46 psi
$.05 well spent.
Thanks, just need to lean out my chip a bit.
With a nickel added under the lid (no vacuum): 54 psi
Previously (no vacuum): 46 psi
$.05 well spent.
Thanks, just need to lean out my chip a bit.
