2jz single guys, what engine management are you running?
- Thread starter Jaguar
- Start date
He is retarded if he says using a map ecu to tune a 1jz to 900whp is no problem. The correction on the map signal would be crazy and I wouldn't even think of running any kind of boost with timing numbers all over the place. Maybe you misunderstood what he said.Ric said:
I dont care who he is. That statment is retarded..Ric said:
To be honest though, it is true I guess.. Just run enough octane you wouldn't have to worry about it.. I wouldn't dream of trying to push that setup on pump gas with any kind of boost though..
tissimo said:
No seriously, it's not.
Let just put it this way, in 1996 he had the worlds fastest MKIV running 11.4 @ 129 and it was NA-T(fucking rocked the world off it's axis). He was building full street trim MKIV's in the 9's since 1998.
So um... yeah. If Jarrett says it can be done, it can be done. End of discussion. He's forgotten more about tuning motors then what Darin @ titan will ever learn (you know Darin... who tunes the 6 second Titan drag race cars, daily drives the 9.0 second full interior, radio, a/c, cruise control MKIV).
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you linked us to the Map ECU 2 which looks like an amazing product! It does everything! But it's not $200, it's $700! I like it a lot though. Just have to find a knowledgeable installer in SoCal when I decided to go with it. Amazing!
mapecu2 is amazingly easy to install, ive done it before (pnp harness on a MKIV, but isnt harded to install than an afc). i also believe it to have one of the best programs out there. full timing control, fuel control, 2 step, nitrous control. its a piggyback that can replace a standalone.
wow the biggest nut swing ever.. think for your self instead of aimlessly follow your fearless leader.Ric said:
Ok you Might be able to use the map ecu to run 900whp, but try putting pump gas back in and boost 18 psi or so.. Say you're using 760cc injectors (2x the stock 380s, and wont give you 900whp) you'll be cutting the Map signal 50% to get the proper fueling. Cutting the fueling 50% means at 5V map signal you'll cut it to 2.5V (key off on the stock map sensor is ~2.4v) so the ecu thinks you're running 0 psi. So at 0 psi say 4500-5000rpms peak torque, you have XX timing in the stock fuel map right? I'm not sure on the value but I assume ~ 30* or so.. Fwiw I ran my aem @ 32-36* at 0 psi and ran fine) so how will 30* and 93 octane work at 18 psi? Not very good..
To be more accurate.. you're turbo is producing much more air to use more then 380cc injectors (380whp).. say you're pushing 500whp at 18 psi (500cc injectors lets just say) ~ 35% less (pulling 35% fuel). So 35% of 5V = 3.25V which is ~ 4-5 psi of boost.. What's the stock timing map at 4-5 psi of boost. say 20* (retarding 2* per pound of boost, very concervative) still 20* at 18 psi on 93 octane is very aggressive still. Call your boy up and ask if 20* of timing at 18 psi on 93 octane is safe? I bet he'll say no..
These are all guess on what the stock ecu will be doing with timing.. Its too risky imo. Yes it might be able to make 900whp, but is it reliable for everything? no..
The Map ecu Scales the Map voltage just like an AFC or a emanage, so you are saying that a AFC or Emanage can make 900whp as well.. They are no different they way the manipulate the stock ecu to get the desired fueling.
700 Map ECU 2
450 Harness
200 MKIV OBD1 ECU
$1350 total, AEM is $1425 new.
Jaquar, I just got an AEM today. I have a MAP ECU and jumper harness. This is a version 1, not 2 but I will sell it for $350 shipped. PM me if you are interested in it before I post it up.
450 Harness
200 MKIV OBD1 ECU
$1350 total, AEM is $1425 new.
Jaquar, I just got an AEM today. I have a MAP ECU and jumper harness. This is a version 1, not 2 but I will sell it for $350 shipped. PM me if you are interested in it before I post it up.