What's on your grill?

 

KC HiLites driving lamps. Baseline below (flashed back to stock, FTP charge pipe, TTi TMD) :

 

Keep us updated champ.

 

Third file fixed throttle CELs. Overlayed to stock.

 

Those look like very small gains. I get that max power gains are just part of the equation, but still. I was expecting a little more. This seems similar to the JB4.

 

That was just to sort things out and keep you guys posted since throttle CELs were an issue to some. We're above that now. Will post final graphs later.

 

As it is rather late in this part of the world, a screenshot of OV's latest FB post would have to suffice as a results announcement. They've uploaded some charts over there as well. I promise to write something more detailed tomorrow/later.

Am I happy with how everything finally turned out? I sure as heck am. Cheers all.

 

Nice. NX's are FWD right? So less gains for RWD for IS200T and RC200T/RC300.

I want to buy but still want to see other member issues resolved before biting the bullet.

 

It is clearly said above that's an AWD...

Yes, you have an option to buy NX with FWD only.

 

Hi, my NX is AWD. You can expect bigger numbers with both RWD and FWD vehicles.

================================================================================================

Now, onto the tune review.

Some folks here might recall that I've had the following issues in the past:

1. Flipped modes for 1.01G-C 02
2. Weak low/mid-range due to my FTP charge pipe for 1.02
3. Stock rev limiter for 1.02 despite 1.01G-C 02 having already bumped it up

With these in mind, I got into the remote tune session wishing for the following:

1. Restored low/mid-range power lost from installation of aftermarket charge pipe
2. Possibly increased top-end to take advantage of improved plumbing
3. Safety margin to allow for bad gas
4. Rev limiter raised back to 1.01G-C 02 levels

OV achieved all of the above and made the vehicle pull harder than even 1.01G-C 02. We got to hit 228 AWHP at some point, but I'm attaching below the chart that concluded our session, overlayed with the stock/factory tune's data in red.



While max figures are indicated, there are some things I wish to highlight that perhaps affect drivability more than the former:

• At least 200 AWHP, the former peak, is now available from roughly 3800 to 6000 rpm.
• The powerband widened a little towards the low-end and even more so towards the top-end. This makes staying in a lower gear longer before shifting into prime rev range possible, improving overall acceleration.
• Rev limit increase to 6600+ rpm eliminates double upshifts at 6000 rpm, which happens when the vehicle decides to auto-upshift at the same time I do. I understand that this is not an issue with ISs.
• I don't think dyno charts show this, but the vehicle seems to get to the top-end faster than before.
• Throttle response is faster than ever.

I'll just go ahead and quote Mat's post-tune breakdown here:
So, yeah. We pretty much saw gains everywhere. With this tune, my NX's the most fun to drive it's ever been. I'm also happy to have a perfect file to fall back to should future updates not work out for me - a "stable build" of sorts in software parlance.

Further notes and theories

It is without doubt that all of this wouldn't have been without Mat's skill. Having said this, a 50+ AWHP gain up top seems rather out of the ordinary, given the supposedly tiny stock turbo that comes with our 200ts. I theorize that the turbo muffler delete and aftermarket charge pipe played a role in this, since the factory part replaced by the latter had so much kinks and flow interruptions.

Now, don't get me wrong; I replaced the charge pipe as insurance, firmly believing that it will do nothing in the way of performance. I only started thinking about it when I noticed a decrease in low/mid-range in exchange for better top-end pull. Could it be that the increased total internal volume of the charge pipe, as a result of fewer kinks and despite having identical in/out diameters, delayed boost buildup, as there was a bigger space to pressurize? Did the smoother path work favorably up top, reducing compressor-side resistance - the compressor is connected to the turbine, after all - and increasing flow capacity?

I can't say for sure, but OV was definitely able to take advantage of my setup.

 

crap how did I not see the AWD part. Haha. I just jumped to the numbers and graphs.

 

reading on my phone. So to clarify your only mods are TMD and charge pipe? Not sure if I missed any other mods since I’m on my phone.

I’m on a RC300, with TMD, PPE catless downpipe, invidia midpipes, and injen intake. I’m on a BMS stage 1 tune but still run stock axle backs. I’m excited at the possibilities.

 

Haha no worries, mate. Totally understandable as I'm sure a lot of people have been waiting for info for quite some time now.

As far as engine mods go, yes, the TMD and charge pipe are my only mods. Not even an intake or an aftermarket air filter. Mathew told me we could likely get to 60-70 AWHP gain with a downpipe and full exhaust, but the latter isn't something I want to do, and options for the former are too prohibitive at the moment, with the cheapest being over $1000. Having said these, there's a high chance you'd see higher gains on the RC than I did on mine.

As no turbo upgrade options would likely be coming for the NX, I think this reflash is the end of the road as far as my vehicle is concerned. Not too shabby, definitely, and plenty adequate for the kind of roads we have here. Maybe a Lotus Evora IPS (same transmission as the NX and transverse 6AT Toyota V6s) A/T valve body and Quaife helical diff in a few years - who knows. Ah, I digress.

 

I hope there's more to hear from OVTune before that Black Friday Sale ends.

 

Black friday sale??