N54Tech.com - International Turbo Racing Discussion
Prev Previous Post   Next Post Next
Stroker396's Avatar
Stroker396 Stroker396 is offline
Junior Member
Posts: 50
Join Date: Dec 2019
Car: 535i
Default How much Max PSI on 93? - 09-29-2020, 07:27 PM

So E85 is less prone to knock (higher octane) which allows you to increase the level of boost correct. The downside is that it requires 30% more volume hence the need for better lpfp, pi etc...

On 93 octane with a better lpfp fuel delivery is not a limitation. So therefore it must be knock (higher compression from higher boost)

So, if this is the case, How can I monitor for knock? to be able to work up a custom map 6? I assume to run a richer AFR I would need to modify the tables in the BEF? (Tunerpro)

Custom tuners have been able to reach over 600whp without PI (but other supporting mods) I am guessing map 2 and 5 are far below that.

Before the I got he car right it seemed to be overboosting (and fast). Right now it seems to be dead on for map 2 at 14.5 psi

E85 is not always available I would like to maximize the cars performance on 93.


08 535i MT Blk. CP w/BOV, JB4, BEF, DCI, edited things delete, Inlets, 7" FMIC, SP exhaust, X Clutch, poly/delrin shifter bushings, Walbro 525, RB PCV, catch can, VRSF oulets, MMP Gen 1 Stg3, 3.5Tbar, 2 step, FSB WMI
Anti Lag up next.
On Hand: JB4 PI Controller
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

vBulletin Skin developed by: vBStyles.com
Copyright 2007 - 2020, N54tech.com