3vz-fe ECU enhancements?

[Silent Runner]

Ok I've checked the search function and found little or nothing on this question. About a year ago I ordered and then installed a Jet Performance module, 6730 into my 93 Camry V-6. Other than giving me some useful information on the voltage my car was running at it did nothing to enhance or harm the performance. (Other than introducing some finacky wiring connections) After doing some research on the 3VZ FE, I advanced my timing from the stock setting, and then the engine seemed to wake-up quite a bit. This so called perfomance module, intercepts the wiring between the mass airflow sensor and the ECU, thats all. I would say at this point I prob. saw about a 10-15hp increase with a much torquier feel through the 3000-4500rpm range. This sounds alot like the results gained from people that know how to "advance or move the MAF a cog richer". I haven't looked into how to do that but it seems like this is all the Jet Perfomance Module may do. They also claim that if you send in your ECU, they will return it with a better AF and ignition timing map, which will give much more significant power improvements, perhaps in the 10-15% range.
Any other experience or insight into this or any other electronic measures to tweak a little more refined power out of our engines?

[chronoti]

no

sell it and move the cog

[Silent Runner]

Ok this has been thrashed in the threads but I think this is maybe a worthy offering. I finally got around to cutting open my MAF and moving cogs around. I was a little reluctant after have spent some good money on a certain module that claimed to offer me some good potential gains. Now after reading up on the stuff, I did advance my timing to the recom. specs, and it seemed that maybe I got the gains from this retune that were described. But now that I have gone the full tryout, disabled my piggyback on the MAF, and played with the cogs, its clear that the piggy was never doing anything. At 3 cogs it seemed a little flat, but acted like a changed engine. It had a quieter induction sound and exhaust note. The one annoying exhaust resonance at about 1800 rpm in a higher gear under load was greatly reduced. Knocking it back to 2 cogs advance brought up the power level, ya! But at the same time it still ran quieter and noticably stronger than under any previous states. I always wondered about this P. system, the MAF screen ran backwords to common sense and the TPS reading went from 2% to 98%, just off idle. The web researched specs. and alterations actually altered the sound and feel of the drivetrain along with the performance gains. The piggyback system, costing many dollars did not do any of this.

[LynchburgCSI]

Written by someone who knows this engine VERY well. Could have saved you a lot of time.

http://mr2wiki.com/MKII/3vzfetune
http://www.mr2.com/forums/v6-owners-...toyota-v6.html

[camry6]

Originally Posted by LynchburgCSI

Written by someone who knows this engine VERY well. Could have saved you a lot of time.

http://mr2wiki.com/MKII/3vzfetune
http://www.mr2.com/forums/v6-owners-...toyota-v6.html

.................after reading those write-ups, I feel much MORE proud to own a 3VZ-FE!........make that 4 3VZ-FEs!!!!

[LynchburgCSI]

It's a GOD of an engine. 350whp on stock internals (because they're all forged except the pistons). Upgrade the pistons to forged ones, and you're good to 450whp. If you REALLY wanted to and knew what you were doing you could do those numbers without a piggyback.

[Silent Runner]

Thanks on top of thanks to Lynchburg for directing me to those articles! It's funny I did alot of web searching before joining Toyota Nation, but I only found bits and pieces quoting and paraphrasing these articles. It was the piece of the pictured article I found with the search function here, and your reference to the total article that pushed me to action and cutting open the MAF. I was reluctant to do it because tha last time I cut open a sealed system on my old Mazda turbo the results were disastrous and I thought my Jet Module was probably doing the same thing anyway. Know anyone that wants to by a really cool $320 (can), voltmeter? It also shows your oxygen sensor bouncing the air/fuel ratio up and down a few ways, and tells you your getting the best fuel economy by stomping on the throttle to wide open!

[LynchburgCSI]

Haha, there's a lot more info on the MR2 boards if you're serious about forced induction options for the 3VZ. I'm sure gothmog3vz would attack this thread if he saw it. He and I are the two huge 3VZ fanatics around here. And EEngineer when he shows up. And thanks to Toysrme for all the research.

[Silent Runner]

Originally Posted by LynchburgCSI

Haha, there's a lot more info on the MR2 boards if you're serious about forced induction options for the 3VZ. I'm sure gothmog3vz would attack this thread if he saw it. He and I are the two huge 3VZ fanatics around here. And EEngineer when he shows up. And thanks to Toysrme for all the research.

i bought my Mazda Turbo in '94 with 65K Km. on it. It ran at 7-8-5 psi boost and it generated performance levels that matched or exceeded some of the best performance sedans of that time. When I found out how to turn the boost up to 12psi, and opened up the exhaust a bit, I created a monster. It kept running that way until about 320K, when its power a boost started to drop off. Sold it at 365k in perfect running order and got my Camry. I hated the lawn mower, noisy vibration of that damn engine, but at about 2500 rpm it would start to give you this odd, almost unbelievable shove in the seat of your pants, then by 3500rmp it felt like it wanted to tear the front wheels off the car, or there was some kind of JATO (jet assist take-off system) working. I love turbo charged perfomance, there is nothing quite like it. I am looking into it, but for me it would have to be a relatively mild boosting setup and it would have to work in a dead reliable manner .

[Gothmog3VZ]

Originally Posted by LynchburgCSI

Haha, there's a lot more info on the MR2 boards if you're serious about forced induction options for the 3VZ. I'm sure gothmog3vz would attack this thread if he saw it. He and I are the two huge 3VZ fanatics around here. And EEngineer when he shows up. And thanks to Toysrme for all the research.

Did someone call my name?


Yep, the 3VZ-FE is a beast of a motor - Like Lynch said, Forged internals with the exception of the pistons (cast aluminium), so once you get the pistons out of the way, 450 hp is no sweat (for the car - you're gonna sweat quite a bit working in some turbo plumbing though).

The 5-speed is either E53 or E153 (the 153 is what most people swap to, it's pretty much the same box, but with beefier synchros iirc), and it just makes the car that much better if you have it

Then there's the fact that with the AFM mod (MAF is if you have a heated wire, which didn't come on the 3vz, though you could retrofit one if you so wanted - AFM is Air-Flow Meter, the thing with the flap + cog), you get 15 hp for free basically.
My car is currently running the stock setting, but I find it warms up quicker that way (and since it's winter, I can sacrifice the power for some heat ).

Then there's the powerband, peak torque from 2200 to 4600 rpm (this is due to the ACIS system - you can delete it for more top end power, but you lose the bottom end, which is what the 3vz is known for).

And, did I mention, TORQUE!!!!

It's OBD1, which is easier to tune mildly (if you go turbo, you usually need an aftermarket ecu, but you can tune the 3VZ's oem ecu, if you're feeling cheap, to handle up to 350 whp. you'll be running so rich though, that your drives will be limited to transit between gas stations ). OBD2 would eventually tune your changes out (or so I read - correct me if I'm wrong).

It's an iron block which is damn heavy, usually bad, but in a fwd car like the Camry, you want as much weight on the front wheels as possible, for more traction.

Super detonation resistant, practically bulletproof, severely overcooled... it's just begging for a pair of T25's and an alltrac system to be hooked up to it!

*edit* If you want to do some research on the motor for yourself, look for some of the threads by Toysrme as well as the MR2 guys - Toysrme was the pioneering 3VZ tuner for the Camry platform

[Silent Runner]

Gothmog... gee I feel like if talking now to one of the Gods of Toyota modders. Is it reasonable or possible to add a smaller turbo to this engine, that will give good low end boost and add to the cars torquey feel,and take the hp levels up to the level of modern sport sedans? Like current Camry's, Altimas or Accords, while not blowing up the engine for daily use?

[LynchburgCSI]

He's just an expert in theory like me. WE NEED MONEY.

You'd probably be interested in doing a smaller t3/04 hybrid turbo for quick spool up times. (EEngineer did a LOT of research on this. Search his threads and some of my older ones.) Should be perfect for a single turbo build to 350whp. That's probably what i'll be going with unless I pick up a M62 suprcharger.

[Bdub215]

Originally Posted by LynchburgCSI

He's just an expert in theory like me. WE NEED MONEY.

You'd probably be interested in doing a smaller t3/04 hybrid turbo for quick spool up times. (EEngineer did a LOT of research on this. Search his threads and some of my older ones.) Should be perfect for a single turbo build to 350whp. That's probably what i'll be going with unless I pick up a M62 suprcharger.

i still think 2x CT-26's or 2x 20g's would suffice for this motor.

[Gothmog3VZ]

Originally Posted by LynchburgCSI

He's just an expert in theory like me. WE NEED MONEY.

You'd probably be interested in doing a smaller t3/04 hybrid turbo for quick spool up times. (EEngineer did a LOT of research on this. Search his threads and some of my older ones.) Should be perfect for a single turbo build to 350whp. That's probably what i'll be going with unless I pick up a M62 suprcharger.

Yep. Got my build planned out and researched, only thing I need is the $$$ to put it together .
It'll be awesome when I finally get around to a turbo, but 1st-things-1st, clutch job!

Originally Posted by Bdub215

i still think 2x CT-26's or 2x 20g's would suffice for this motor.

If you're running twins, then a pair of t25's are the ideal turbos to use on this motor (CT26 is too small for it)

But it's a hassle to fit in twins due to the layout of the motor (the large tilt towards the back, and the lack of general space), better off getting a single turbo setup (which will still cost you your CC, but hey, real men don't need CC )

[LynchburgCSI]

I'm VERY tempted to show you that the cruise control doesn't need to be removed.