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Yes, PLEASE do! I will absolutely stay glued to your results. That's friggin' awesome man. Good luck!
Just a quick update, I'm still running the Bosch 440cc injectors with no issues. Car runs very strong and much healthier with the larger injectors, Tundra throttle body and E85 OR 93 octane. No DTC codes - lean or rich since the swap. Passed the TX state emissions shortly after the install. Now on to other fun stuff!
 

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Discussion Starter #182
Just a quick update, I'm still running the Bosch 440cc injectors with no issues. Car runs very strong and much healthier with the larger injectors, Tundra throttle body and E85 OR 93 octane. No DTC codes - lean or rich since the swap. Passed the TX state emissions shortly after the install. Now on to other fun stuff!
Big thanks for the update! I'm almost willing to bet that my injectors probably wasn't the problem all along. Will know when I get the RAV4 back out the shop. Will check on it next week.

Your post is very encouraging. Really glad it worked out.
 

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Just a quick update, I'm still running the Bosch 440cc injectors with no issues. Car runs very strong and much healthier with the larger injectors, Tundra throttle body and E85 OR 93 octane. No DTC codes - lean or rich since the swap. Passed the TX state emissions shortly after the install. Now on to other fun stuff!
Hello. I have a 2016 Highlander with the 2GR-FE that I'm trying to boost. That's good news to hear,but can you go a bit more in depth on what you did to run it well?Did you also tune it to run on E85 or 93 octane?
 

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Hello. I have a 2016 Highlander with the 2GR-FE that I'm trying to boost. That's good news to hear,but can you go a bit more in depth on what you did to run it well?Did you also tune it to run on E85 or 93 octane?
R9KTuned reflashed ECU. The handheld programmer allows you load either a E85, 93 or stock tune... technically it'll store 5 different ones. You can only have one loaded at a time. Takes about 5min to load each tune. Gustavo has tuned the ecu for 93 octane and we're still tweaking the E85 tune. Currently needs more fuel before 5500rpm.

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R9KTuned reflashed ECU. The handheld programmer allows you load either a E85, 93 or stock tune... technically it'll store 5 different ones. You can only have one loaded at a time. Takes about 5min to load each tune. Gustavo has tuned the ecu for 93 octane and we're still tweaking the E85 tune. Currently needs more fuel before 5500rpm.

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I'm going with the HKS GTS 8550 supercharger kit,which is good for 500 crank horsepower,but I am looking to get 400 crank horsepower for now. It looks like I will need the 525cc injectors.
 

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I'm going with the HKS GTS 8550 supercharger kit,which is good for 500 crank horsepower,but I am looking to get 400 crank horsepower for now. It looks like I will need the 525cc injectors.
Keep us posted on your build - got a link? What are you tuning with? Myxalplx ran the 550cc and had rich fueling issues on the R9K Tune...

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Keep us posted on your build - got a link? What are you tuning with? Myxalplx ran the 550cc and had rich fueling issues on the R9K Tune...

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This is the supercharger kit:https://www.vividracing.com/hks-gts8550-supercharger-assembly-p-151104115.html
It's about $1,000 cheaper if you buy it from Japan.
This is the aftermarket ECU that I'm buying: https://www.haltech.com/product/ht-151305-elite-2500/
These are the fuel injectors:https://www.monkeywrenchracing.com/product/mwr-fuel-injector-set-6-2gr-fe-engine-525cc/
 

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This is the supercharger kit:https://www.vividracing.com/hks-gts8550-supercharger-assembly-p-151104115.html
It's about $1,000 cheaper if you buy it from Japan.
This is the aftermarket ECU that I'm buying: https://www.haltech.com/product/ht-151305-elite-2500/
These are the fuel injectors:https://www.monkeywrenchracing.com/product/mwr-fuel-injector-set-6-2gr-fe-engine-525cc/
Wow.. that's some list! Is this a wish list or have u started buying some of this?

Couple questions..
1. What bracket you u using for this supercharger and who's installing it?

2. Why Haltech and not the Link ecu?

3. Who's doing the ecu install and tuning? Got a price estimate on this?. I'm really interested...

4. Why go with the short MRW injectors instead of longer ones that reach into the lower intake runner?

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Wow.. that's some list! Is this a wish list or have u started buying some of this?

Couple questions..
1. What bracket you u using for this supercharger and who's installing it?

2. Why Haltech and not the Link ecu?

3. Who's doing the ecu install and tuning? Got a price estimate on this?. I'm really interested...

4. Why go with the short MRW injectors instead of longer ones that reach into the lower intake runner?

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1.My mechanic is installing it.
2. I am going with the Haltech 2500 because it's a very advanced ECU.
3. This I'm still looking around. The benefit of the Haltech 2500 is that it has auto-learning tables for fuel,ignition timing,idle control and boost control. It also has dual channel knock control,closed loop idle speed control,closed loop O2 control etc. Any decent tuner is going to be able to work on this ECU.
4. I didn't think about this. I choose these injectors because they fit my power goals,but maybe I ought to think a bit more about it. Thanks for the suggestion!
 

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1.My mechanic is installing it.
2. I am going with the Haltech 2500 because it's a very advanced ECU.
3. This I'm still looking around. The benefit of the Haltech 2500 is that it has auto-learning tables for fuel,ignition timing,idle control and boost control. It also has dual channel knock control,closed loop idle speed control,closed loop O2 control etc. Any decent tuner is going to be able to work on this ECU.
4. I didn't think about this. I choose these injectors because they fit my power goals,but maybe I ought to think a bit more about it. Thanks for the suggestion!
I suppose if your mechanic is installing it, he'll make a custom bracket and pulley tensioner? Sounds expensive, like easily $10k with all parts, install and tuning. Would love to see progress on the build!

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Discussion Starter #191
HKSsupercharger2019's setup sounds really interesting. The Haltech 2500 ECU and such is out of my league. I'm just here to read and learn at this point. Looking forward to results and all. I take it you will be upgrading either your pistons, rods or a combination of both. Can't remember where I read about the limit being in the mid 400hp range somewhere. I need to find a link

I'm back on stock injectors and passed my emissions. Evap canister was changed out as well. Been driving around without issues for the most part. Did get two check engine lights about maf sensor out of range sigh. Haven't been back on though. So...holding steady atm. Just driving it off and on to see how things pan out. Drives well though without issues.
 

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HKSsupercharger2019's setup sounds really interesting. The Haltech 2500 ECU and such is out of my league. I'm just here to read and learn at this point. Looking forward to results and all. I take it you will be upgrading either your pistons, rods or a combination of both. Can't remember where I read about the limit being in the mid 400hp range somewhere. I need to find a link

I'm back on stock injectors and passed my emissions. Evap canister was changed out as well. Been driving around without issues for the most part. Did get two check engine lights about maf sensor out of range sigh. Haven't been back on though. So...holding steady atm. Just driving it off and on to see how things pan out. Drives well though without issues.
Hello,

The Lotus guys have said that the limit is about 460 crank horsepower on stock internals,with the Lotus ECU. The limit on the Toyota ECU is about 340-350whp,or 370-385 crank horsepower.

I have been busy mostly doing small mods like upgraded dash speaker installs,front and rear speaker installs,front camera install, 2"lift kit,Magnaflow muffler,Vibrant performance resonator and K&N air filter. Next month,I should be able to add another Magnaflow muffler for a dual exhaust setup and get a X-Pipe installed.

Here's a list of the engine internal stuff that I intend to slowly purchase over the next couple of months:
MWR coated rod bearing set= $105
MWR head stud kit= $299
MWR head gasket set 97mm= $219
Wiseco forged pistons 9:1 97mm= $999
Mustang GT500 supercharger= $650
MWR Fuel injectors= $459
AEM fuel pressure regulator= $125
AEM fuel pump 340lph= $122
Haltech 2500 ECU= $2,230
Total= $5,208

I'm still debating whether to get the Darton MID sleeves(modular integrated deck), that will allow me to convert the open engine deck of the 2GR-FE to a semi-closed deck. That way it can handle serious power like 500-600whp,but I'm still undecided about it.
 

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Hello,

The Lotus guys have said that the limit is about 460 crank horsepower on stock internals,with the Lotus ECU. The limit on the Toyota ECU is about 340-350whp,or 370-385 crank horsepower.
I saw your similar post on the other forum, ...what makes you think the ECU is limiting the hp?
 

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I saw your similar post on the other forum, ...what makes you think the ECU is limiting the hp?
Hello,

I think you saw my post on Toyotanation. I'm going from what I've heard,but on the MR2 forums, there was a thread of Gouky stating that the max horsepower on the Toyota ECU is about 350whp. Beyond that,no one has figured out the fuel injection mapping tables. That's not a problem with the Lotus ECU,which is different than the Toyota ECU.
 

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I saw your similar post on the other forum, ...what makes you think the ECU is limiting the hp?
I cannot recall the exact thread right now,but I believe it was on the MR2 forums. The point is that you will need an aftermarket ECU if you want to make real power(350whp+) on this platform.
 

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I cannot recall the exact thread right now,but I believe it was on the MR2 forums. The point is that you will need an aftermarket ECU if you want to make real power(350whp+) on this platform.
I have a reflashed ecu from R9KTUNING and with my Nitrous, I'm probably around or over 350whp...
 

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You are running E85 I think,right? I'd be curious to see what horsepower are you making on the dyno.
Originally I just had a 93 and an E85 tune. Currently working to wrap up my 4 new tunes..

93_ALL_MOTOR
93_NITROUS
E85_ALL_MOTOR
E85_NITROUS

Obviously the 93 octane tunes have less advanced timing and lower % of fuel added and each nitrous tune has timing reduced...more % reduced on the 93 than the E85.

Hope to at least get on the dyno and try both an all motor and nitrous pull once its dialed in better.
 

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Originally I just had a 93 and an E85 tune. Currently working to wrap up my 4 new tunes..

93_ALL_MOTOR
93_NITROUS
E85_ALL_MOTOR
E85_NITROUS

Obviously the 93 octane tunes have less advanced timing and lower % of fuel added and each nitrous tune has timing reduced...more % reduced on the 93 than the E85.

Hope to at least get on the dyno and try both an all motor and nitrous pull once its dialed in better.
Yea,I think you might have just about hit the limit on the stock ECU.E85 fuel used to be cheaper by around $0.20 cents per gallon here,but now it's the same as the regular 87 octane price.Not to mention that your fuel economy goes down quite a bit on E85.

I just wish that Toyota didn't make this ECU so difficult to work with.Many other cars have easily accesible ECUs.
 

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Yea,I think you might have just about hit the limit on the stock ECU.E85 fuel used to be cheaper by around $0.20 cents per gallon here,but now it's the same as the regular 87 octane price.Not to mention that your fuel economy goes down quite a bit on E85.

I just wish that Toyota didn't make this ECU so difficult to work with.Many other cars have easily accesible ECUs.
Biggest benefit for E85 isn't fuel economy at all..but what it can do for boosted or nitrous - performance applications. E85 is about $1.57 here in Dallas and $3.14 for premium 93. You don't want to run 87 if you're boosted...too much chance for knock...less with 93 and even less with E85.

I dont plan on running an aftermarket standalone until the stock ecu isn't able to pull enough fuel at idle and running around town- it handles the 440cc injectors just fine on 93 and E85. Anything bigger it would struggle and run too rich...what others have seen when running MRW larger injectors. Until I max out these 440s injectors, I'll stick with the stock ecu and should be just fine.
 
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