stevechumo
Active Member
Does anyone know if there's any cam gear made for the 1UZ like the picture below? I'm looking for a set to retard the timing for my SC400, but my belief is it doesn't exist, maybe made by a machine shop.
Cam Gears for 1UZ - Adjustable?
- Thread starter stevechumo
- Start date
The 1UZFE EGR Delete Kit is available for sale here.
XR8tt is right. That's what I'm looking for.
I never heard of anyone reflashing the SC400 ECU, so that may not be the answer. I'm still deciding if I should look into a Split Second (AIC1)to control 2 additional fuel injectors with a retard timing device, or a Split Second (FTC1) to control 8 bigger injectors and it can also retard the timing.
They mean ignition timing mate NOT cam timing, so no there's NO need to retard the cam timing.
Retarding ignition should be easy with any half decent ignition box.
XR8tt
Active Member
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stevechumo
Active Member
I'm in the process of rebuilding my 1UZ so yes, I've seen ins & outs of this engine. I think I mentioned cam sprockets with the timing belt run around them. The reason I'm looking for them is because I don't want to spend a grand or more on a piggyback or standalone ECU to retard the timing when I boost over 12 psi.
XR8tt is right. That's what I'm looking for.
stevechumo
Active Member
Umh. That may be an issue. I actually haven't thought of it. I'm just basically looking for all possible solutions without spending much on this project.
I never heard of anyone reflashing the SC400 ECU, so that may not be the answer. I'm still deciding if I should look into a Split Second (AIC1)to control 2 additional fuel injectors with a retard timing device, or a Split Second (FTC1) to control 8 bigger injectors and it can also retard the timing.
91_4x4runner
New Member
Have you heard of Megasquirt by chance?
XR8tt
Active Member
Sheesh an EMS stinger is $1k here in the land down under and I guess with exchange rate ? That equates to $600 - $700 for a boost sensitive safe tune...
http://www.enginemanagementsystem.com/frameindex.htm
The std ECU can be left to control Auto, idle etc so tuner doesn't have to set up idle control, air con, speedo, traction control, thermo fans etc...
http://www.enginemanagementsystem.com/frameindex.htm
The std ECU can be left to control Auto, idle etc so tuner doesn't have to set up idle control, air con, speedo, traction control, thermo fans etc...
v8soarer_1991
New Member
you cannot flash the ecu
have a look at these links for engine management systems for tuning
www.etuner.com.au
http://www.haltech.com/interceptor.htm
http://wolfems.cart.net.au/cat/32991.html
http://www.lextreme.com/forums/showthread.php?t=10681
have a look at these links for engine management systems for tuning
www.etuner.com.au
http://www.haltech.com/interceptor.htm
http://wolfems.cart.net.au/cat/32991.html
http://www.lextreme.com/forums/showthread.php?t=10681
stevechumo
Active Member
I looked into MegaSquirt but it seems too complicated. I'm more like a engine hardware guy so I just want to build the engine and take it to a tuner. That's why I'd like to see and learn about all of the options out there.
I've read that some boosted 1UZ with over 12 psi have blown the engine without retarding the timing. That's kind of worry me. So there's no need to retard the cam?
I've read that some boosted 1UZ with over 12 psi have blown the engine without retarding the timing. That's kind of worry me. So there's no need to retard the cam?
XR8tt
Active Member
Retarding cam or adjustable ??
Or timing as in ignition ??
Imo there is ONLY one way to do it..
Fit an aftermarket ECU !!! One that reads boost etc..
I have seen so many try to save $$ and end up spending $$$ on engines and parts so they save on ECU..
TUNE IS 90% of engine performance and approx 99.99 reliability when real power is made...
I bet Justen has a good ecu ?? To have a reliable well running std internal engine...
The issue is that n/a engines advance as rpm, power increases..
With boost it retards, especially through peak torque ..
My Ford can have as much as 50* timing to bring boost on [manual trans] but on full boost it retards back to about 23* with 18 Lb boost or 650 rwhp... As an example..
There is NO WAY the std ECU can do this..
The ECU I run is the Haltech E11V2...But as said its more what your tuner is familiar with!! Find a good one in your area and go by what he says.. Or find a brand that seems to have good reputation.. Then find a tuner on their site close to you.. Talk to him...
Or timing as in ignition ??
Imo there is ONLY one way to do it..
Fit an aftermarket ECU !!! One that reads boost etc..
I have seen so many try to save $$ and end up spending $$$ on engines and parts so they save on ECU..
TUNE IS 90% of engine performance and approx 99.99 reliability when real power is made...
I bet Justen has a good ecu ?? To have a reliable well running std internal engine...
The issue is that n/a engines advance as rpm, power increases..
With boost it retards, especially through peak torque ..
My Ford can have as much as 50* timing to bring boost on [manual trans] but on full boost it retards back to about 23* with 18 Lb boost or 650 rwhp... As an example..
There is NO WAY the std ECU can do this..
The ECU I run is the Haltech E11V2...But as said its more what your tuner is familiar with!! Find a good one in your area and go by what he says.. Or find a brand that seems to have good reputation.. Then find a tuner on their site close to you.. Talk to him...
Toyota are smart enough to make it too difficult to flash the ECU.
A guy in Australia used to make some minor hardware changes that allowed some basic adjustment but not enough to make it worthwhile.
Aftermarket ECU's are cheap so why would you muck around with the factory unit.
A guy in Australia used to make some minor hardware changes that allowed some basic adjustment but not enough to make it worthwhile.
Aftermarket ECU's are cheap so why would you muck around with the factory unit.
JustenGT8
New Member
They mean ignition timing mate NOT cam timing, so no there's NO need to retard the cam timing.
Retarding ignition should be easy with any half decent ignition box.
stevechumo
Active Member
Thanks for all the info, gents. I'd love to learn more about tuning, but whenever I read about it, I go nuts. :smileeek: I just talked to a tuner at Split Second and he said he has the FTC1 (fuel and ignition control) to work with the LS400, but he's not sure about SC400 wiring diagram. I hope he could come up with an answer.
I have another question. How can the oxygen sensors be tricked so the stock ECU won't override the piggyback ECU in closed loop or partial loop? I've seen there're some O2 sensor simulators that can change the voltage signal to the ECU, but I'm not sure how they work.
I have another question. How can the oxygen sensors be tricked so the stock ECU won't override the piggyback ECU in closed loop or partial loop? I've seen there're some O2 sensor simulators that can change the voltage signal to the ECU, but I'm not sure how they work.
