HP Tuners for 2005-2015

That stated, i have had the rubber fall off too....



OK, ill stop now.... but for reals i have had that, and it sucks when its deep down in the hole.



OK I PROMISE ILL STOP!


That magnetic snapon one is probably costs an arm n a leg.

 

How much value does one place on having less headaches and lost time?

 

Thanks guy s for all the input and suggestions. As stated a longer socket that I could only find in the 1/2" driver size got past the rubber and did the job.
The colder plugs were suggested when chasing more ponies and if we are using 150 over the original 236 I think I'm about there. On my last plug change 4 of the 6 electrodes were down to nothing after 60,000 miles and the truck was laying over bad at shift points so I thought I'd try a colder plug.

I'm thinking the hotter 22's will be fine, give better fuel economy, but those of us running higher boost are just going to have to be prepared to change plugs more often. For me that's going to be once a year to pull the lovely sc off and change em out. I've got it down to just a few hours despite it being just the wrong height and climbing over the front to jack up my back.

So, 12, what kind of power do you think you are making on yours? I've seen 10lbs of boost at 5000' elevation but never been at lower elevation and cooler temps at the same time to see more.

 

So, try flashing back to the TRD tune and drive it for a week. UUUUUggggh! Fuckin terrible.

@JustDSM you da man.

I suppose I should actually get you some logs now eh?

 

I have no idea. I will say this though, since changing out the cam gears it has made me realize that I have reached the limitations of the 2.5" exhaust and will be changing piping from the Y after the cats all the way to the tailpipe to 3". I went from putting out 12.5-ish PSI peak to 16 PSI peak and these guys made me realize that cam gears while offering a horsepower increase should not increase boost by simply tuning. That alone tells me I have a restriction, and since the only factor which changed was exhaust valve close duration, my money is on the exhaust now being undersized for the mod combo I currently run.

 

The stock manifolds are definitely hurting flow due to design in that the air gets blocked trying to fight through each exhaust port to the collector. Where headers have a more balanced flow to the collector. The stock 4x4 ypipe is definitely restricting from all the pipe bends. Not to mention, air trying to push through all four cats in the process.

The stock cat-back exhaust on the other hand, has minimal restrictions for flow. And is the least to gain.

I will say you probably have a great start in acceleration but dies quickly in the higher gears cause the exhaust back pressure is so great.

 

I'm going to say you are pretty spot on. The exhaust manifolds will always be my ultimate restriction and the only thing I could do is the DT shorties (I think those were the ones) which are CARB legal... But right now I'm at a point where I want to make my life in reverting back to OE easier and not harder, especially considering that I have heavy old skids in the way it only adds to the grief if I was doing mods I need to reverse every two years... I'm hoping that by upping the piping to the larger 3" setup it will net me enough increase in airflow to be able to drop some restriction. I suppose we will see.

 

12TRDTacoma..total agree on the standard exhaust manifolds and please correct if I'm not on the same page here but by fitting the retarded exhaust cam gears this would lead to less valve overlap which would contribute to a increase in boost pressure??

 

A good test would be to run an open exhaust from the end of the y-pipe and see what max psi you hit. If its still 16psi, then 3" piping wont really make a difference in the end.

 

Precisely.

The increase in boost pressure is a byproduct of the increase in overall airflow created by the cam gears which is ramping up boost due to a restricting intake or the exhaust setup.

Basically, there is a bottleneck somewhere in the system and the cam gears are exploiting that.

That actually wouldn't really tell me much of anything because the Y-pipe is still 2.5" so the restriction is still in the piping. If I widen the pipe to 3" it would probably help due to the added Venturi effect.

 

never mind- found the answer. "Now that your vehicle is licensed you can flash it an unlimited number of times."

did that E85 ever get added like you guys were taking about year ago?

 

E85 can be used/tuned, but it’s not a true “flex fuel” setup that can compensate for changes in ethanol content. Any significant shift in ethanol content would require a simple adjustment to the tune.

 

Also a note for anyone interested in running e85. Make sure you test it if you don’t have a flex fuel setup. Or this is what can happen
https://youtu.be/CJYFRxsfISg

 

Since we’re in the topic of tune/de-tune. How realistic would it be for one to be able to flip between SC tune (TRD vs custom) and NA if one were to travel somewhere without premium gas and have to remove SC belt? At some point I’d like to travel the pan-American highway but I’m afraid the gas situation might not allow with the SC up and running. Sounds like the need for reliable internet might be the limiting factor.

 

carry two ECMs with different tunes.

 

Brilliant

 

(I know this is a HPT thread but......)
The old OVTune handheld could do what you're asking. It could hold multiple tunes/maps for different octane gas. I dont see why it couldnt hold a map for NA and one for SC. And if i recall correctly, you dont need internet access to flash 1 map to another.

But the thing is....i dont think the OVT handheld is supported anymore by OVT. I could be wrong.

 

Unfortunately not. The company has issues with their software, and on top of that they are in Italy and components of them came from asia, all of which are being affected by the current COVID disaster.

 

I was reading about you mentioning deleting the emission control stuff for "race truck" / "offroad use only" and repurposing a signal 5v etc. didn't know if you guys ever got HPTune to do it