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Why is there no tuner FAQ sticky? [Archive] - Toyota MR2 Message Board

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Why is there no tuner FAQ sticky? [Archive] - Toyota MR2 Message Board Toyota MR2 Message Board > Toyota MR2 Generations > MK 2 MR2 - SW20 > MK2 Stand-Alone EMS and Nitrous Discussion > Why is there no tuner FAQ sticky? PDA

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nonsoundflux01-29-2011, 05:12 AMThis is my MR2.com introduction, it feels more at home in the EMS forum. I'm a performance tuner in Denver, I just got my car stolen so I'm in the market for a new adventure.

I came from the Honda world, where any model can be reprogrammed with a jumper harness & a chipped OBD1 ECU for under $200... I fear that's not the case with the MK3, but I'd like to know what my options REALLY are.

I've been searching the web profusely, are there really no other alternatives to a standalone or a piggyback? No reflashing, ecu swaps, or EPROMs? I've tuned AEM and PowerFC before, but... it's one hell of an investment, and piggybacks are ridiculous.

Performance information seems to be very opinionated and conflicting also. It'd be nice if there were a more linear database of tolerances and capacity... Mainly whether or not I can make 300hp safely on a 1ZZ and how much beer money I'll have to sacrifice for it, but likewise some consolidated information for other aspiring tuners would be rational too.

Anyway, cheers mate. karl01-29-2011, 07:51 PMbe creative.

my MR2 runs "a jumper harness and chipped OBD1 honda ECU for under $200."

the only real limit is your imagination. TomsMR201-29-2011, 08:18 PMan engine is mostly an engine.. if you're good with honda ecus, by all means use one! they're powerful and capable. Servin01-31-2011, 05:38 PMIf your coming from honda's and looking for quick easy stuff then you came to the wrong brand. Toyota has neither great NA engines nor Turbo ones.

There are 2 good NA engines, the 3SGE BEAMS which has VVTi on intake side and the 2zzge which has VVTL-i which includes lift and vvt function on both intake/exhaust. Both are lacking in NA modifications/builds. You can make good power but itll cost an arm and a leg since 90% of it will be you doing something no one else has.

If you have a MR-S the 2zzge would be the best swap than trying to tinker with the weak 1zz. With some light mods you can get 180whp and have a fun car. Or since your familar with honda's swap in a K20 since its been done a few times now. arber021401-31-2011, 08:24 PMIf your coming from honda's and looking for quick easy stuff then you came to the wrong brand. Toyota has neither great NA engines nor Turbo ones.

There are 2 good NA engines, the 3SGE BEAMS which has VVTi on intake side and the 2zzge which has VVTL-i which includes lift and vvt function on both intake/exhaust. Both are lacking in NA modifications/builds. You can make good power but itll cost an arm and a leg since 90% of it will be you doing something no one else has.

If you have a MR-S the 2zzge would be the best swap than trying to tinker with the weak 1zz. With some light mods you can get 180whp and have a fun car. Or since your familar with honda's swap in a K20 since its been done a few times now.

Crap, i should sell my car then. I thought the 3sgte was a good engine. lol
What engine do the scion tcs have? I have seen some fast ones, and i am guessing in the 200+ hp since they were keeping up with a cobalt SS LeePeyton02-01-2011, 04:58 PM2Jz? Horrid! They never get passed 1100 HP......... jeeez what a loser. That's it, selling the 2 for a RSX. Servin02-01-2011, 08:34 PMOkay I forgot about the 2jz :P


The 3sgte isnt a terrible engine but i much rather have a sr20det for a 2.0l turbo engine. Nissan has a better record with turbo engines. TomsMR202-01-2011, 08:59 PMif anything, the sr is less reliable. they're both basically the same. short of the newest direct injection motors, all the dohc 2.0L turbo engines have been pretty much the same. nonsoundflux02-02-2011, 06:06 PMOk good start! Thanks guys, Karl have you had any bugs with your Honda ecu, and is it practical on the MK3?
I'm not looking for wicked performance, just 300hp, I'd like to know if the 1ZZ is capable as-is other than bigger injectors and a tune.
Or, given the cost of modifications will a K-swap be more cost efficient...
Anyway my purpose of this thread most of all was to gather a list of tolerances of each motor at one place in case future tuners were to inquire, so if you have any input on it that'd be awesome. karl02-02-2011, 06:18 PMno bugs. works better than the stock ECU ever did.

i'd suggest something like an EVO/mivec ecu for the 1zz to control the vvti. if i had a spyder though, i'd more likely be looking at an engine swap. the only thing that car really needs is some decent power. i wish my SW handled like that. LeePeyton02-02-2011, 06:20 PMWell since the SR20DET is so awesome, I guess that's why the S15 from "Sumo Power" rocks a 2JZ competing in D1 and is on this months cover of super street. Those SRs and their superior rocker arms XD All joking a side I feel a motor is a motor. They all make explosions to make HP any thing with enough money can make big numbers. In the well chosen words of a the great Ricky Bobby "I wanna go fast!". Servin02-03-2011, 03:37 PMD1 is alot about show and wow, would not use that for motor tech. Besides quite a few the 240's still use the DET in D1.

Also dont see how the SR is less reliable, the stock components are quite beefy, easy to work on, and cheap to mod. LeePeyton02-04-2011, 11:29 AMJust busting your chops :D Still side with the soul less truck motor for the 240s XD

What was this thread about? :P nonsoundflux02-04-2011, 06:17 PMThe K-series Honda motors use VVT as well, although it's not much cheaper than a standalone. But I've already engineered an external VVT module that's programmed similar to internal nitrous controls with a pulse width modulator, so if the P28/dizzy option really works I'll guinea pig this and make a new thread later.

Ps I thought I'd add this engine reference thread since the wiki doesn't seem to work.
Toyota Engine code - Toyota Nation Forums (http://www.toyotanation.com/forum/showthread.php?t=62987)

Any other useful additions would be appreciated. karl02-05-2011, 09:13 PMthe pgmfi guys are probably most of the way to having the k-code hacked, but no one over there wants to release anything for fear of getting sued by h0ndata, despite the fact that it's not h0ndata's code in the first place. they don't want it released and they will sue whether they have a case or not just to shut people up because they have the $ to do it and the developers don't have the $ to fight it.


interesting on the VVTi box. the 2GR guys might like to know more about that, considering that's their major hurdle in the management department. 328FTW02-05-2011, 09:59 PMI think the 3s is pretty good. Honda motors have weak rods and thin ringlands once you start to mod, mitsi don't have a lot of meat in the heads and tend to crack, not all of them but eh also crankwalk. Nissan make great motors depending on what ones you choose, toyota in general is good.


Engine management is kinda whatever, the car has injectors, a TPS, distributor VR pickups and a map sensor. You are most of the way to being able to run almost any ecu just from that. I've been messing with my megasquirt lately and have a couple rough maps if that helps but I wouldn't run them without a bit of careful knock testing etc. Big Thurs02-08-2011, 05:11 PMSomeone end this ridiculous thread that has become a shouting match of opinions. nonsoundflux02-11-2011, 05:03 PMBig Thurs, unfortunately that's what I was trying to avoid, back to square one.

I have a better idea, everyone just PM me generalized Toyota engine and tuning specs & I'll make a sticky-worthy thread, or a wiki page if it ever works.

The following would be useful:
- Which year/gen has which engines
- Which tuning options are available for them
- What the approximate max power/ boost thresholds the hardware and sensors can manage
- Recommended aftermarket brands (opinionated of course)
- Stock and/or modified ROM binaries or configuration files for any variety of tuning options.

Speaking of which, Karl where did you get Toyota maps from? And my VVTi circuit is relatively barbaric, since it functions like a stepped 2-stage nitrous circuit via RPM it's not fully linear like the stock VVTi but it's better than nothing. If anything the stock ECU can be pigtailed and used as an auxilary VVT controller and skewed with a variable resistor. I'll develop this more later. karl02-16-2011, 11:20 PMSpeaking of which, Karl where did you get Toyota maps from?

there aren't any.

i cobbled together a base map from various AEM/nemesis maps i could find from cars with similar mods. added some fuel, pulled some timing and tuned it from there. it was actually ridiculously easy. Powered by vBulletin® Version 4.2.5 Copyright © 2026 vBulletin Solutions Inc. All rights reserved.

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