CAMTuning 2.4L Tuning development with Cobb Tuning

[CAMTuning]

Nice!
Was this on factory exhaust also?

I have a Carven catback on the truck, but have done enough testing back to back with the stock muffler to know that it isn't a factor at this power level.

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[SC4Runner]

I have a Carven catback on the truck, but have done enough testing back to back with the stock muffler to know that it isn't a factor at this power level.

Would you mind sharing some audio/video clips with the downpipe? Cold start and while running in the cabin? I want this mod, but I don’t want excessively loud.

 

[CAMTuning]

Would you mind sharing some audio/video clips with the downpipe? Cold start and while running in the cabin? I want this mod, but I don’t want excessively loud.

Sure, I can do that. I have some audio with the Carven exhaust, which I took off today and put the stock muffler back on. With the stock muffler, I can't tell a difference from the stock downpipe.

 

[CuttingedgeSport]

Not to be the tightwad here, but have you considered running a different truck with the tune installed to see what is the max best safe power that can be obtained with all stock components on a 91 octane tune?

Coming from some big turbo builds, I understand all the reasons for larger, more efficient intercoolers, intake improvements, and the downpipe/exhaust size increases. I don’t want to downplay the importance of any of those good aftermarket parts that are available. I looked at this platform the same way before I decided I wanted this engine over the twin turbo 3.4L.

What I question is how far you can stretch a totally stock component 4Runner with an excellent and safe tune.

I know that the turbo upgrade is the last huge piece of the puzzle to push way over 450whp, but I question if all of the stock components could support ~320whp with just a tune.

 

[CAMTuning]

Not to be the tightwad here, but have you considered running a different truck with the tune installed to see what is the max best safe power that can be obtained with all stock components on a 91 octane tune?

Coming from some big turbo builds, I understand all the reasons for larger, more efficient intercoolers, intake improvements, and the downpipe/exhaust size increases. I don’t want to downplay the importance of any of those good aftermarket parts that are available. I looked at this platform the same way before I decided I wanted this engine over the twin turbo 3.4L.

What I question is how far you can stretch a totally stock component 4Runner with an excellent and safe tune.

I know that the turbo upgrade is the last huge piece of the puzzle to push way over 450whp, but I question if all of the stock components could support ~320whp with just a tune.

Yes, I’ve tuned my truck in completely stock form, and we’ve also dyno tuned many stock trucks (hybrid, and non, both on our dynojet and another shops hub dyno) on 91. So I’m not just stacking parts and guessing — I’ve seen what these do in factory trim.

On a fully stock truck, 91 octane, safe calibration, you’re realistically looking in that ~310–325whp range depending on dyno type and conditions. The factory hardware is actually pretty capable within that window.

Here's a our development truck, completely stock, non hybrid during early development.

Here's an example of 2 different stock hybrid Tacoma's (Sorry, no 4Runners, but same/same) with before and after results on 91. The difference of ~10whp in these on both baseline and tuned power is due to larger tire size on the 2nd graph (35") but the delta is nearly identical.

I don’t think bolt-ons are required to make good power safely. But I’ve still taken my own truck through the same upgrade path a lot of customers end up following so I can see exactly what changes, what actually helps, and what doesn’t. I’d rather test combinations on my own truck and gather real data before anyone else spends money on it.

 

[CuttingedgeSport]

Excellent breakdown on the power potential.

I will speak to you in the future about a tune on a Cobb Accessport.

 

[SC4Runner]

Not to be the tightwad here, but have you considered running a different truck with the tune installed to see what is the max best safe power that can be obtained with all stock components on a 91 octane tune?

Coming from some big turbo builds, I understand all the reasons for larger, more efficient intercoolers, intake improvements, and the downpipe/exhaust size increases. I don’t want to downplay the importance of any of those good aftermarket parts that are available. I looked at this platform the same way before I decided I wanted this engine over the twin turbo 3.4L.

What I question is how far you can stretch a totally stock component 4Runner with an excellent and safe tune.

I know that the turbo upgrade is the last huge piece of the puzzle to push way over 450whp, but I question if all of the stock components could support ~320whp with just a tune.

The estimated HP that I was provided with the SXTH CAI and a tune was 315-317, and those dyno numbers posted by @CAMTuning line right up with that.

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