Purple box settings?

[Donovan]

Hey! I just thought I'd repost this. I seem to get different answers every time it comes up. I have DP MP CB intake and PFS purple box. My O2 doesn't work to well with the DP so I always get low O2 readings. I know I need to use a quality sensor to tune it right. Any sugestions on fuel/timing settings for these mods? ------------------

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[bbr1]

To keep it safe(!) I'd recommend using these maps for 10 psi:

RPM 2200 4000 6000 7800
Fuel +4 +6 +6 +6
Timing 0 0 -1 -1

All of these settings are for the "Max Boost" table. You should leave the rest of the settings at zero.

Of course, these maps are rough estimates. I would suggest spending some time on a dyno with a wide-band lambda sensor for fine-tuning. You should also tune higher boost maps on a dyno. I don't suggest going over 11 psi in any case, on your stock I/C.


------------------

-Saad
'93 BB R1
276+ RWHP

[Donovan]

Thanks! That is exactly the kind of response I was fishing for! Thank you.

[bbr1]

Glad that you found that useful. I can't stress enough on how important it is to get the car tuned on a dyno. Use these settings only as a temporary setup. These are rough estimates - you may want to add another 2% to the fuel additions, across the board, to keep it very safe (i.e. +6 +8 +8 +8); I'm not sure about how a midpipe increases fuel requirements, since I don't have one....

For an excellent FAQ on the PMS system, go to:
http://www.wvinter.net/~flanham/wlanham/

[Donovan]

Oh. Hey what mods are you running? If you don't mind could you tell me what you have for the mid/ high settings as well I don't use the high but woul like to have a starting point for mid.

[bbr1]

I have a PFS intake and I/C; Pettit downpipe and HKS catback. Original engine, turbos and main cat.

At 10 psi on the PMS, I'm around 270 rwhp. 13 psi - ~300 rwhp.

I'll post my my maps later on - don't have them with me right now.