How many of you experienced code P1516?

[Engineer@HPT]

Just looking to see how many have experienced this code before and how (if) you have gotten around it?
This is usually associated with a larger throttle body install.


Edit: You no longer need or should e-mail support, this feature is now available in 3.2:
http://www.hptuners.com/forum/showth...l=1#post437374

[LSxpwrdZ]

Have a ZL1 with a NW102 sitting on my rollers right now that is being stubborn. It didn't hiccup once with the stock TB and the NW102 will force REP P1516 as soon as you touch the pedal.

[Engineer@HPT]

Have a ZL1 with a NW102 sitting on my rollers right now that is being stubborn. It didn't hiccup once with the stock TB and the NW102 will force REP P1516 as soon as you touch the pedal.

Please e-mail your file to support referencing this thread.

[LSxpwrdZ]

Please e-mail your file to support referencing this thread.

Sent

[scattergun9]

Are we going to add some diag tables to loosen up the reigns on this code Ive experienced 1516 with aftermarket TBs too many times to care for. Usually revert back to stock or at least one that works. I Havent had issues with a NW102 on anything newer than a 09 with a gold blade ls3 yet. Almost 80 percent of the time on a ls2 or gen3 with adapter harness it throws the 1516, I assume because of the ls3 electronics ,not being compatible, but I have had a couple gen3 vettes and ls2 that it did work on without issue , so I don't know. NW sells it as being compatible with everything. I had a near stock 2008 G8 GT that would p1516 near redline at WOT after a vararam install, but figured out the tech put the cross blade on the 85mm maf perpendicular to the throttlebody blade to try and hide the maf connector. After re clocking the maf so it was parallel with the blade again the 1516 stopped. I had a 06 ls2 gto with a tvs 1900 that was ported to accept a TPIS LS2 102mm TB intermittently set 1516 right after a WOT pull. Stock throttle body it would be fine but lost 30whp. It was on a 2bar os, so we took a close up video of the TB blade with the intake tract off and could actually see the throttle blade start to vibrate at redline. Playing with the p2101 diagnostics did nothing. I believe Hinson told us they have built a custom airfoil in front of the the throttle blade to split the airflow around the blade to reduce the turbulence, we never tried it,the customer wouldn't pay us to fabricate it. Tuned a 01 Z06 with a 408 and YSI that made 950whp would intermittently set 1516 if it bounced the limiter at 6800rpm. Setting the TPS fail high and low voltage thresholds for p0122 p0123 to over 5 volts and the low to like 0.005 fixed that problem even though it never set the tps codes, just p1516.

[Engineer@HPT]

Yes, I am working on a solution. I'm just trying to see how much interest there is. For the time being, just e-mail your file and interface serial to support (ATTN: Engineer) and reference this thread.

[SMEC]

Not seeing the support email address.

[GHuggins]

Hptuners.com - contact

[LSxpwrdZ]

I have the files you guy's sent back but the customer wont be coming back in with the setup for a few weeks for more upgrades. So until then I don't have anymore info to report.

[342sunsetz]

I just emailed support. A customers car threw this code after we finished tuning; I'm assuming it's related to the larger throttle body... Hopefully this takes care of it.

[10_SS]

not sure if this is related but I can go out and feather my pedal without engine running right around 30% and get REP: [] P060D - Internal Control Module Accelerator Pedal Position Performance which creates REP... It's happened on the road a couple times too and Im screwed unless I have my Laptop and cable to reset.. is this realted?

[edmundu]

Was getting it on a CTS-V running a 2.3l @19psi, with the NW102. Reverted back to stock TB, and problem went away. But we clearly are losing boost, and making it harder for blower to draw in air.

I'll be sending support the file, and hopefully we can return to the NW102 setup.

[GHuggins]

I've started yanking the guts out of the stock TB's for ls3's for this reason. I know Nick is supposed to be using the same internals as a ls3's TB or at least he was the last time I talked to him, but not sure on where he gets the parts. All I know is that the OE parts seem to work better?

[edmundu]

So with the OEM LS3 "guts", you haven't had issues with going into REP?

How much psi, or rwhp levels?

[jsllc]

I had this issue with both a ported LS3 and the NW 102. Found out very common. My setup was a TVS2300 Heartbeat on a 2012 ZL1 (15PSI) 760RWPH on 91 octane. Went back to a LS2 TB at the suggestion of Mike Norris (Norris Motorsports). He said that is what he uses to solve the issue. IT did. Had the TB ported by VMAX and have not had a single issue since. There is supposed to be a second gen of the NW102 coming out that resolves this issue. I am supposed to get one to test.

[blownbluez06]

I tune as well as support my customers and friends with their issues and 1516 comes up quite a bit with both stock and aftermarket throttle bodies. Opening the doors for us to widen thresholds would be a great help. Sign a release of liability if you offer it? You bet I will!

[Engineer@HPT]

I've responded with a solution to everyone with an E38/E67 who has contacted me.

[GrannySShifting]

The interest is huge. I had a customer screw me over for $1800 remainder on his bill because he was so unhappy about his NW102 coding at WOT (very very randomly and infrequently - we could never reproduce it with me in the car or datalogging) Use on many cars no issues, but this one would do it only on the road at WOT, never on dyno and inconsistant. I swear I think he was missing shifts and it was causing it to spike.

[GHuggins]

So with the OEM LS3 "guts", you haven't had issues with going into REP?

How much psi, or rwhp levels?

I've got a 108TB on a 2300 heartbeat that made over 900 rwhp - (currently in redesign for more hp ) - never had an issue with it on a zl1 platform. I've made in the mid 700's consistently with no issues doing it this way...

[GHuggins]

I had this issue with both a ported LS3 and the NW 102. Found out very common. My setup was a TVS2300 Heartbeat on a 2012 ZL1 (15PSI) 760RWPH on 91 octane. Went back to a LS2 TB at the suggestion of Mike Norris (Norris Motorsports). He said that is what he uses to solve the issue. IT did. Had the TB ported by VMAX and have not had a single issue since. There is supposed to be a second gen of the NW102 coming out that resolves this issue. I am supposed to get one to test.

Is it one of the "stock appearing" motor underneath ones he's been working on for over a year now?