Thread: Overboost
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F350Lawman F350Lawman is offline
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Join Date: Jun 2006
Posts: 295

.8 spring w/ BB headers and Tial 46mm,w/ Zork tube.

With the below listed mods, the most recent being the B6 intercooler, fuel solenoid and Zork, I am overboosting in 3rd and even 4th. I am sure 2nd will be even easier to overboost I just haven't rung it out in 2nd recently. It is also a factor of the weather, when it's cold it happens easy.

Yesterday (25F), 4th gear WOT it overboosted at about 115. Later when it warmed up (35F) at about 120 or so. Now I am glad I am getting full boost and the car is pulling well....but it is causing me to short shift or run one gear higher so I don't overboost.

I am thinking of going with a softer spring and installing an EBC set right at 1 bar....any thoughts. By the way AFRs are good (safety wise) IMO. I run 13.5 -14.00 at a nice speedy highway cruise and drop into mid-high 11's real quick under full boost.
1987 930 - K27 7200 / DAS Full Cage / Blownsix Intercooler / BB Headers / Zork Tube / Tial 46mm / Adjustable WUR / RPM Activated Solenoid / Open Element Air Intake / Smart Racing 27mm Sways / 24 and 33mm Torsion Bars / Adj. Spring Plates / Wevo Strut Brace / Monoballs / Tow Hooks / Oil Cooler Scoop / Brey Krauss Harness Truss / Race Seats / XD-16 AFR Guage/ 17" Kodiak Racing Whees and Nitto NT-01 255/315s
Old 03-31-2008, 07:17 AM
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