2016 OVTune Tacoma 3.5L Manual Transmission / Engine ECU Reflash

I see your point and understand where you are coming from, I just don’t think that a practical and affordable solution can be attained for the normal Tacoma driver that wants a turbo. I was over $90k into my Supra in 2013 when I last rebuilt the motor and added twin 85mm inline garretts. Ended up with 1180 rwhp at 8k on the tach but was only at 310 rwhp at 3k. No amount of dyno tuning could fix it. Got rid of the residual lag from the true dual set up, but even with one turbo feeding the other there wasn’t enough flow to create the low end boost I needed to be a monster on the track. Don’t get me wrong, that bitch was quick and would lift the front end, but I just couldn’t build enough boost to get out in front and stay in front for the full 1/4 mile. Tons of top end and the big motor big wheel guys didn’t have it so I was constantly having to run them down. Didn’t matter if I tree’d them or not, they would eat my ass at the 60 foot and get out a good car length on me.

 

I miss being in the MT group.

Saying that turbos, in general, are not designed for for low rpm steady state boost is incorrect. You even provided the Ford Ecoboost example of this. Nearly every diesel turbo engine ever made would be another good example. All the turbo understands is flow, it doesn’t know what rpm an engine is at or it’s displacement. If you had smaller turbos and were making 400hp at 6000rpm you could get them to light up much, much faster.
If Mat is trying to get 1200rwhp and 8000rpm with his turbo kit from a 3.5L engine it wouldn’t have low rpm boost either. That would not be an ideal setup for a truck. A 1/4 mile drag car and a pickup should not have comparable setups, N/A or turbo.

If this upcoming Tacoma turbo kit doesn’t see noticeable boost by 2000 rpm or so, I don’t think there will be as much interest. What this motor seriously lacks is low rpm power.

 

Gearing gets you low RPM power. These trucks should have come stock with 4.56 gears and there would be no issues.

 

I agree with the gearing problem. There would more available torque, but it’s not because the engine itself is producing it at a lower rpm.

 

Good post. It isn't actually the air mass flow being pushed out of the cylinder that really drives the turbo, or else it would have to wastegate like crazy all the time. It is the heat from combustion expanding across the hot side impeller that generates the power to compress air. Merely running the turbo with tepid air would not get the same result.

That is (one of the reasons) why you don't get boost on a turboed vehicle until you open the throttle, even if you are at 4500rpm. As soon as you hit the gas at that rpm, yeah you get boost, right now.

I would really like to see twins on this truck. Not that I can afford it. Also a little hesitant to turn up a high compression engine, and really especially can't afford to do internals

 

In my neck of the desert (El Paso), there's not so much rock crawling and technical trails as there are open spaces where you can haul ass or trails where you'll need to go into 4lo and lock the rear, don't get me wrong, but you're not doing a whole lot of technical wheeling. Mostly steep muddy or deep sandy inclines, stuff like that.

You can find the more technical trails where rock crawling is prevalent, but you've gotta drive a fair bit to get to them

 

Seems foolish to dump 6k+ into a turbo or SC set up with the goal of low RPM crawling torque. I'm not sure anyone would do that though. Money should goto gearing and transfer case. Did anyone specifically say they would turbo for off road use?

 

There are numerous posts all over TW from former ricers turned wheelers that are drooling over a turbo set up. Granted, most of their hardcore wheeling consists of hardpacked flat dirt and posed pics for tha gram.

 

Pretty much me and all the Tacoma guys at my work, lol. At least I have some common sense about how to get torque.

 

While these trucks are gutless in stock form during normal driving, I actually think 4lo works pretty damn well. So much that I’m in 2nd a lot of the time and 1st only for the rock crawling sections. Even in some tougher stuff I’ve done in high elevation, from 12-13k feet. You hardly ever even need to use the clutch in 4lo since there is so much available torque. And you can do up to like 45mph in 4lowI believe. If you ever off-roading, hard or easy, use 4low. I don’t think this truck needs any turbo/S.C. for off-roading purposes. Now for everyday driving, for sure, I’d love an increase in smiles per gallon

 

I came from a turbo car that i then went big turbo with, I've reached that point where I'm over the hype of boost for the sake of it lol got my thrill, not exactly desperate for it for no other reason than bragging rights like some people are.

 

@orangeracer is right too. 4Lo is super nice in the 3GT. the truck doesn't NEED boost. With ovtune, it's excellent overall and I thoroughly enjoy it offroad. That being said, if i ever boost it, I don't think I'd regret it. But for a lot of the reasons that have been made, like those by @Trident904 it's not a priority either. Just not out of the question for me in my situation since while I wheel my truck frequently, crawling isn't included in all that

The comment made by @Shellshock about pulling people out was because of how frequently I respond to the local off road recovery page. Head out into the desert and give people a tug out of the soft sand that they're generally dug into. You'd be surprised how often it's a 2wd F-250 lol

 

I deal with the same shit here in Florida. It’s all 20” wheels and low profile mud terrains trying to drag race at every red light but y’all about how badass the local wheeling spot is. I just tell them anyone can do a donut in sugar sand and that it’s not wheeling.

 

The OVTune with my 4.88’s is amazing in 4Lo. In fact, I have only had to use my lockers 1 time since. The low end is absolutely amazing and when paired with some super grippy tires, proper suspension set up that allows a good amount of travel this truck will go just about anywhere. I’ve been able to do a lot more in 2wd where people are in 4Lo.

 

I’m getting ready to put the R8 in the shop and go to a stage 3 setup which should net around 1250 whp on race fuel and 1000 whp on 93 octane. Shit is gonna be expensive.

 

Personally I've got no plans to upgrade suspension or regear. The Pro's fox suspension has been excellent. I'm happy with the gearing and the truck's capability. And even though I plan to get better tires later this year, I'm even really happy with the stock rubbers. People talk shit about them but they're really only bad in snow. I've done just fine with them in sand and mud where I essentially had nearly no tread from the mud caking on there and was doing fine. Many trails completed and I've only needed my locker twice

 

Uh, yes. Yes it will be lol any plans for a third tune with e85 mixed in?

 

All part of the stage 3. Also includes methanol injection. Looking at $40k for all that. What’s crazy is the turbos that are going on aren’t much bigger than the stock turbos, they just have better spooling capabilities. Shop said it’s going to take about 60 days to do everything.

 

That's actually kind of a long time. Is it it cause they're a busy shop or what?

You going with 100% methanol or like a 50/50 blend?

 

They have to do engine internals and shit too. They are a busy shop and the only shop in south Florida that deals with the V10 R8.

It will be a blend but not 50/50. I think the guy said closer to 60/40.