Flybye

This is what I heard. I have no confirmation of such, and was wondering if anyone else has heard of such a thing before I try to mention where I heard it from.

I find it a bit hard to believe, especially since one of the maps floating around is to actually RAISE the timing...

Silver7

Hmmmm... that haltech is sounding better and better huh Mike

Flybye

Maybe I'll be another gunie pig for the AEM unit

matt_ledbetter

92k on car, 30k on Power FC
Full Exhaust
Intake
Greddy IC
HKS Ignition
RP Pulley
RP Pump
Blitz boost controller @ 10 - 14lbs
Y-Pipe
ACT clutch, M2 flywheel
MazdaComp radiator

Base maps and no problems with fuel or timing....

-Matt
'93 touring

KZ1

that is complete bullshit. THe only area that some people may retard teh timing from base maps, is the cells during transition from primary to secondary. And that is usually done when going non-sequential.

I increase the timing at wot with PFC to 24 deg advance, base maps is 17 aprox. You will find these values are fince. As a matter of fact they are extra safe.

Wade

iTrader: (1)

This should probably be in the PFC forum so it would get more responses...

atihun

It all depends on what people are changing their settings to.

I have a modified map in my PFC, similar to the modified map; and my car is relatively stock, so for me the map is very conservative with respect to timing and fuel.

Note that I have been running this map for over a year at 13 to 14 psi and my engine is at 94K. It is still running strong .

NewbernD

iTrader: (1)

The advanced boost isn't with the base map that comes with the PFC.. it's a problem though with some of the maps that the units are shipped with. For example, I got my unit from SR, and the maps that Ray sticks on these are more agressive than the base maps. I believe he starts with the apex "mod map" (tuned for stock engine, intake, downpipe & catback and agressive timing), richens it up/alters for more mods and sends it out the door. That is the map to watch out for. But it's not an indicitave problem with the pfc or anything.

spyfish007

The base maps are too lean. That is what I have seen on dyno w/ wideband O2.

cewrx7r1

iTrader: (2)

My PFC came from Ray programed for mild street port, DP, hi-flow cat, and cat-back. I pulled the cat and put in a MP along with a friends fuel maps for the same setup that I just converted to. His also came from Ray. In truth I do not really have ported intakes as my friends is but do have the same ported exhaust.

My first linear O2 tests gave an AFR range from 12.2 to 11.8 in 70F temp weather. That is about as high as you can safely go! I added 3.9% more fuel by the PIM voltage map and this gave a range of 11.8 to 11.4 which I wanted. When the temps dropped to the 50-60F range, I had to increase to a total of 5% more PIM fuel to keep 11.8 to 11.4AFRs. I am running an upgraded fuel pump, new FPR and PD, and 1200cc secondaries. So if you run high AFRs for summer, you will be lean when it gets cold. The air temp sensor does not do much as it senses the manifold temp more than it does air temp.

A friends PFC programmed by Ray for a large port single turbo engine came with the exact same timing as mine. The fuel map was almost identical but with 8% more fuel by the PIM RPM maps. That is only 3% more than what I am running.

The timing maps that Ray is putting out are very conservative but the fuel may be a bit lean for initial tuning.

Jonesboro

Here is the link to a thread on the Forum where an FD owner reports concerns about the PFC and blown motors. He also references a discussion with Dave at KD Rotary who has expressed similar concerns. It may all be bullshit but the confusion and concern over the PFC maps seems to be widespread.

https://www.rx7club.com/forum/showth...threadid=43038