Qr25de Tuning Capability

Posted by cooptech@reddit | projectcar | View on Reddit | 6 comments

I am thinking of dropping a qr24de into my D21and making around 350+hp. Would this be achievable with rods, pistons, block guard, balance shaft delete and turbo? If so how reliable would this be?

This comes after I saw a video of some guys turbo on in an x-trail and reach 500hp with no intercooler and only fail because of the amount of boost they were making was blowing the head gasket. This is the video

Don't suggest an sr20det or a ka24de, as the sr20's are expensive and the ka24 has been done already and I want to go to something that is a bit different.

Thank you

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No-Locksmith-9377@reddit

Never heard of anyone swapping these. Is there any way to literally tune an ECU for this swap? Will you need to build your own ECU to make it work?

Thats usually the biggest problem with all these types of questions.

Most Nissan Hardbody trucks nowadays get the 2 Nissan engines you dont want or they swap in a small block Ford or Ls engine because they are so easy to swap, make run, make legal, and find parts.

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cooptech@reddit (OP)

I was just going to run a fuel tech or a micro tech. A fuel tech would be better because the ECU and dashboard are all in the same unit.

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No-Locksmith-9377@reddit

I mean, better is relative in that regard. Haltech for example, has the same dash mount, but its just one wire getting ran. Oh god the humanity.... I know a few guys with Fuel tech who dislike working with it in a streetcar. In gutted race car its fine since there is nothing in the way. But in a car with full dash, AC...etc. its a pain.

Fuel tech is a great ecu choice, if you can make it work with the swap. Obviously, some of the fastest guys on the planet use it.

Good luck with it all.

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BoardButcherer@reddit

Yeah, bugger the people swapping in easy shit from the big 3. Nissan makes a lot of good engines for swaps, and if you're going to genuinely put the work into building it out instead of following someone else's paint by numbers YouTube guide it's much more satisfying to keep the badge inside the same as the grill.

Fully programmable ECU's are aplenty, and they have a decent amount of support for nissan thanks to the Z's GTR's and various infiniti "luxury sport's cars".

If he wants to build out the top end, setting up an aftermarket ECU just let's him get the most out of his investment.

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No-Locksmith-9377@reddit

Fully programmable ecusbare a plenty. Ecu's with support for any engine choice, not so much.

Ecu companies like haltech do make universal components, you just need to build everything for it. Or hell just go megasquirt and build the entire ecu too.

If he wants to go against the grain that's totally fine, but he will just have to work that much harder. Not having aftermarket support for a swap means having to leverage your own fab skills and mechanical knowledge. And someone with plenty of those wouldn't ask these questions, they would just do the damn thing.