Ok so I found an ecu in the junk yard said PR4 on it so I bought it then I got home and noticed it says p28 written in marker and I think simili or something like that I don't have it with me now ill put what it says exactly later but I opened it up and it has a sst chip with a quick remove socket, now my question is how to I find out what map this ecu has since I don't need it anymore I wanna sell it and im sure its worth more if I know what map and tune it has. I don't know anything about chipping and tuning ima wrench turner not a ecu tuner lol so if u can explain in a tuning for dummies fashion id appreciate it. Thanks for any help.

 

You'll need a chip burner/reader to read the file off the SST chip. If you plan on selling it then it doesn't matter. The buyer can have it reburned to what they need it for.

 

youll need a burner/reader. Then just try opening it up in several different programs and see which one doesnt look corrupt.

 

Yeah I know they can reburn it but id like to know cuz maybe it has a basemap and a better tune than my car does then id sell the one I got in my car. But thanks for the info ill see what I end up doing and if u know anyone looking for a p28 or pr4 both chipped hit me up.

 

a basemap, or tune for someone else's car will not be better for you.
just hang on to it, and when you get your car tuned, have them re-burn the chip with YOUR tune.

 

I have a Del Sol with a D16Z6 manual transmission swapped with a freshen up rebuild which I did (rings, bearing, pistons, head gasket, head bolts, oil pump port) in for my original stock D15 motor and manual transmission. I have two replacement computers (actually three if I include the stock PO6 from the D15 motor) both are P28's. One P28 is stock and the other is chipped with a SST chip. Presently the stock P28 is in the vehicle. My vehicle has P29 pistons with around 12.5:1 compression. A polished somewhat ported cylinder head, with a AEM timing gear attached to a Crower turbo cam, stock intake and TB.

STAGE 2 - Forced Induction Special
Designed specifically for turbo or supercharged engines. Short duration reduces overlap, for more cylinder pressure.
RPM Range: Idle to 8000+ 63441YT

Middle (VTEC)..........234° duration @.050...............lift .269"
Secondary...............197° duration @.050...............lift .205"
Primary....................197° duration @.050...............lift .205"
Exhaust...................218° duration @.050...............lift .237"

Lobe Separation Angle 108

The non VTEC duration and lift are almost the same as the stage one crower but with a 111 LSA instead of a 108 LSA that the turbo cam has and the VTEC lobe is the same as the stage two crower but with a 109 LSA again instead 108 LSA that the turbo cam has.

My question is how should I tune this?
Let me state that I am actually a doctor, have only had carbureted non computerized vehicles, (Triumps and Vettes), so I really know little to nothing about base maps and what and how this should be tuned. Just to let it be known, I wanted to recapture lower RPM torque and have a stock non lumby idle. But have a big boast when the VTEC kicks in.

I would appreciate answers that I can learn from and not just bring it to professional and get it done, even though I won't be doing it myself, I still need to start learning and know what should be done. I also don't trust mechanics or most in the auto service business so its important to know what is going on and what I am expecting to get for my money.


DocManakos@verizon.net

 

tuning manual in my signature.

 

Thank you very much.