GR Supra 101: Routes to big power

[alfi.mke]

I dyno'd on a mainline hub dyno. so based on 6% to 7% discrepancy lower than a dynojet:

560-580 whp on 94 (Mainline 540 whp) (24 psi)

640-660 whp on E40 (mainline 610 whp) (28 PSI)

680-700 whp on E50 ( Mainline 640 whp) (28 Psi)

North of E52/E53 rail pressure begins to drop.

Additional hardware supporting mods that are power or tune related: TBE, Flex Fuel sensor, MHD +

Wow that’s pretty good! I’m really tempted to try out a remnant turbo since it seems like the best bang for your buck. Seems like it has a lot more to give once you address any fuel / trans limitations

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[razorlab]

Wow that’s pretty good! I’m really tempted to try out a remnant turbo since it seems like the best bang for your buck. Seems like it has a lot more to give once you address any fuel / trans limitations

Just don't track with it or you will end up with a naturally aspirated Supra.

 

[AJRMKV]

Just don't track with it or you will end up with a naturally aspirated Supra.

LeWhy

 

[razorlab]

LeWhy

The wastegate arm is an inferior design being two pieces instead of one piece cast. It heats up and separates and no flappy wastegate door closure no mo’

This is another instance of people truly not understanding the difference in demands between turny track cars and car bowling cars.

 

[alfi.mke]

The wastegate arm is an inferior design being two pieces instead of one piece cast. It heats up and separates and no flappy wastegate door closure no mo’

This is another instance of people truly not understanding the difference in demands between turny track cars and car bowling cars.

ah I did see some complaints about that. Pure900 more reliable for track and occasional drag racing?

 

[razorlab]

ah I did see some complaints about that. Pure900 more reliable for track and occasional drag racing?

no idea

 

[i3igpete]

ah I did see some complaints about that. Pure900 more reliable for track and occasional drag racing?

up until this point I've only heard about the wg extension rod requiring adjustment. I think this is the first time I've heard about the flapper arm itself bring a potential issue, but the concern makes sense if its an interference fit.

 

[alfi.mke]

no idea

Only one way to find out hey

 

[razorlab]

up until this point I've only heard about the wg extension rod requiring adjustment. I think this is the first time I've heard about the flapper arm itself bring a potential issue, but the concern makes sense if its an interference fit.

There was actually a post on this forum about it months ago. Also some others but not posted on this forum. Most turbo WG flapper arms are cast as one piece (minus the flapper). This one unfortunately is two piece and the weld can fail with track use.

 

[Fat Beezy]

A lot of great information to digest here. Was hoping to get some input on my power and reliability goals.

I have an A91 2021 (6-port, pre-June 2020) that is already got the basic bolt ons and Ecutek tune (~450whp and ~520wtrq).

Goal: in general, I want to safely maximize power while keeping supporting components stock to minimize complexity and cost.

For instance, tuning to limit torque to ~550 so that transmission and axles don't have to be upgraded (I also have xHP TCU tune and upgraded transmission fluid). This also would playing into not having to upgrade LPFP or intake manifold. So several thousands of dollars and complexity can be avoided by targeting specific thresholds of the car.

So whatever power I can achieve with those limitations in mind, what would I need to accomplish that, and what power would you expect me to be at? Something like 600-700whp and ~550trq is what I have in my head, but I'm not sure how realistic that is in this scenario.

I am interested in an upgraded turbo (considering DAW Ultra Flow X Gen2), flex fuel kit for E85 (93 for daily driving), and possibly port injection if needed.

Is that enough to hit those goals or is any of it overkill for the limitations? What other components would I need (e.g., I'm not clear on what all I need to support PI)?

 

[D3ad_Hand]

A lot of great information to digest here. Was hoping to get some input on my power and reliability goals.

I have an A91 2021 (6-port, pre-June 2020) that is already got the basic bolt ons and Ecutek tune (~450whp and ~520wtrq).

Goal: in general, I want to safely maximize power while keeping supporting components stock to minimize complexity and cost.

For instance, tuning to limit torque to ~550 so that transmission and axles don't have to be upgraded (I also have xHP TCU tune and upgraded transmission fluid). This also would playing into not having to upgrade LPFP or intake manifold. So several thousands of dollars and complexity can be avoided by targeting specific thresholds of the car.

So whatever power I can achieve with those limitations in mind, what would I need to accomplish that, and what power would you expect me to be at? Something like 600-700whp and ~550trq is what I have in my head, but I'm not sure how realistic that is in this scenario.

I am interested in an upgraded turbo (considering DAW Ultra Flow X Gen2), flex fuel kit for E85 (93 for daily driving), and possibly port injection if needed.

Is that enough to hit those goals or is any of it overkill for the limitations? What other components would I need (e.g., I'm not clear on what all I need to support PI)?

Well depends really. There is a difference between 600 and 700 whp. Also, FYI 650tq is the max on the stock trans not 550. As to get to 600whp It can be done with an upgraded turbo and some e blend like E30 should give you a bit more over 600. As for 700 you would need PI, and since your car is pre june and running Ecutek. you should be fine. As for PI support all you really need is an aftermarket charge pipe which I am sure you have. Also, you would need motiv reflex for PI. and of course the PI kit it self. After reaching 700whp that should be the max for the LPFP so after 700whp it is going to get expensive. As for the max tq for the gear, you should be fine. Tell your tuner to down tune the tq, and just make sure not to go over 650tq. With that being said you should be good to go.

 

[Fat Beezy]

Well depends really. There is a difference between 600 and 700 whp. Also, FYI 650tq is the max on the stock trans not 550. As to get to 600whp It can be done with an upgraded turbo and some e blend like E30 should give you a bit more over 600. As for 700 you would need PI, and since your car is pre june and running Ecutek. you should be fine. As for PI support all you really need is an aftermarket charge pipe which I am sure you have. Also, you would need motiv reflex for PI. and of course the PI kit it self. After reaching 700whp that should be the max for the LPFP so after 700whp it is going to get expensive. As for the max tq for the gear, you should be fine. Tell your tuner to down tune the tq, and just make sure not to go over 650tq. With that being said you should be good to go.

Okay great, thanks for that.

What about the axles? I have a buddy who snapped two OEM axles when he ran slicks at the strip on ~550 torque. Would you suggest avoiding that by just not running slicks, or should I further adjust torque targets in gears to avoid that? I do take it to the strip every now and again, but I'm just on PS4S's.

 

[D3ad_Hand]

Okay great, thanks for that.

What about the axles? I have a buddy who snapped two OEM axles when he ran slicks at the strip on ~550 torque. Would you suggest avoiding that by just not running slicks, or should I further adjust torque targets in gears to avoid that? I do take it to the strip every now and again, but I'm just on PS4S's.

The axles snapped because your friend is doing Drag runs. If you do drag runs then yes you do need beefier axels, but if you're doing runs like say 100-200 you don't need them. Also, axels don't snap just like that your friend was riding the car pretty hard I'm sure lmao. As for slicks they did play part because they provide more traction, and that in turn put most of the load on axels. However, I would say go for slicks they're really good for drag runs. Just don't drive them in the rain, and get beefier axels for drag runs.

 

[alfi.mke]

Not sure if this is the right spot for this, so apologies, but is there any vendors out there that accept crypto as a form of payment?

I really want to get a pure900, but not sure if any vendor out here can make it happen lol

 

[Brolee]

@D3ad_Hand MHD+ is now available for the Post-June 2020 ECUs with the updated FEMTO unlock. Which, as I understood, means Motive reflex is now fully integrated for PI control with MHD.

Unless I'm mistaken, then by all means anyone that knows more can elaborate.

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