Gen3 engine - Toyota Nation Forum : Toyota Car and Truck Forums

mr2_dori · 04-16-2006, 11:08 AM

what kind od ECU upgrade would be good for this car. there are so many. what are the best ones.

mr2_dori · 04-19-2006, 03:03 PM

this is the gen 3 3s engine im talking about. turbo 245hp. im wanting to change my ecu to get more power and to tune it. so many ecu's out there. any help

nepopolus · 04-19-2006, 07:52 PM

eh i havent gotten to the point yet )just getting a 3s now) but i would guess they all roughly do the same thing ..personally i love hks but that is just me

JekylandHyde · 04-20-2006, 05:53 AM

What other mods have you done to justify needing a new computer?

mr2_dori · 04-20-2006, 09:07 AM

JekylandHyde i was just wondering how in the hell did you get that much hp out of your mr2. the black one. the car looks sick and i love it. well i just wanted to get a new ecu just because i heard the it helps. this is what i have. hks cam gears, hks head gasket the thick one. tanabe downpipe, boost controller. i drove a mr2 with a blitz ecu and all it had was cam gears and 17psi boost. that car scared me. the huy said he was running like 310-320hp to the wheels. same engine i have. i have no idea how much hp i have now. but do i even need a newer ecu. and how much boost can i run on a gen 3 3sgte.

***MRQtwinturbo*** · 04-20-2006, 09:35 AM

^^what turbo??...i doubt that kind of power can be made with piggyback ECU...

JekylandHyde · 04-20-2006, 10:14 AM

Quote:

Originally Posted by mr2_dori

JekylandHyde i was just wondering how in the hell did you get that much hp out of your mr2.

The recipe is simple: large turbo, large intercooler, large fuel system, large throttle body, large intake, large piping (intake and exhaust), large cams, large intake manifold, big bost and proper engine management

Quote:

Originally Posted by mr2_dori

hks cam gears, hks head gasket the thick one. tanabe downpipe, boost controller.

This site: http://www.mrcontrols.com/primers/power.htm
offers a very logical path to making power with our engine.

You seem to be a bit out of step as far as order goes.
Your next step would be intake, exhaust, intercooler and then a bigger turbo if you are so inclined.

Quote:

Originally Posted by mr2_dori

i drove a mr2 with a blitz ecu and all it had was cam gears and 17psi boost. that car scared me. the huy said he was running like 310-320hp to the wheels.

Lots of people say lots of things. Unless he offered proof, I would not put too much value in people's words. If he was running that much power, he would need a bigger turbo.

Quote:

Originally Posted by mr2_dori

i have no idea how much hp i have now. but do i even need a newer ecu. and how much boost can i run on a gen 3 3sgte.

There are two ways about addressing engine management:

1. piggy backs - these are computeres that alter the signal of your sensors going to your stock ECU. They essential "lie" about what is going on to make the ECU pump out more performance.
2. EMS - engine management system - this is a completely new tunable engine computer

The draw backs of piggy backs is that they are limited in how much they can tune and power they can extract safely. They also can be risky on the MR2 as far as popping engines if you push them too far.

EMS's are epensive and you need to learn (or hire someone) to tune it.

You can get quite a lot of power out of these cars without ever going into the engine management issues. When (and if) you go that route is up to you. You are not at a point that you "have to" or that it is the next step for making more power.

JekylandHyde · 04-20-2006, 10:14 AM

Quote:

Originally Posted by MRQturbo

^^what turbo??...i doubt that kind of power can be made with piggyback ECU...

Why not? I made 351 rwhp with piggies.

***MRQtwinturbo*** · 04-20-2006, 10:21 AM

Quote:

Originally Posted by JekylandHyde

Why not? I made 351 rwhp with piggies.

do you really think that with just cam gears...blitz ecu and 17psi...is capable of over 300 to the wheels???....your car had alot more mods than that...plus good tuning and race fuel to make 351...

JekylandHyde · 04-20-2006, 10:31 AM

Absolutely agreed ... there is no way he made over 300 with only the mods listed.
I thought you were responding "in general" ... sorry if I grabbed your comment out of the context that you meant it.

I suspect either the guy was "guestimating" his rwhp for bragging rights OR there are some serious parts missing from the mod list.

mr2_dori · 04-21-2006, 01:20 PM

thanks guys. i think that one guy with the mr2 with 16psi was lying. like you guys said, bragging rights. well thanks for the help. i will be back for more. peace