iCrap

I'll do a WOT 3rd on my way home. That'd be great if you could graph it, thanks!
Do i have to hit 7k though? That's 100mph-ish... I'll try.

iCrap

It's almost impossible to hit 7k in third as that is over 100mph. I did a few runs but the highest i did was 5k.

I also did a third gear pull from 70 to 90 and saw 105 k count.
56, 36, 0, 13

I WAS able to complete a 2nd gear pull, idk if you can use that.
Knocks on that were HUGE... 233 total
111, 92, 3, 27

Then, i recorded my usual background driving route... average of 300 knocks. This can't be good...

I have uploaded all the datalogs below so you guys can take a look.

oh also the best 2nd gear pull where i got all the way into 7k is inside the "driving" one.

BaoZZeR

When i did my WOT 3rd gear pulls for vit, he said hold it down until engine chokes which was about 7.5k. now sure how fast i was going but going fast is everyday driving for me...

iCrap

You have the MT right? What does third redline at? 5k i was at 80mph so i assume 7.5k is well over 110mph on the auto.

I drive fast but no way i can do 0 -120mph anywhere around here.

Jaheri_cbp

The auto has waaaaay longer gears lol.. I can see where that's a lil difficult.. I find plenty of places in orlando to hit 110mph any day though.. Toll road 417 is the shit! Lol

ssjoeboe9

Yeah I've never seen a cop on 417!

For M/T you're only at around 80MPH in 3rd gear @ 7000RPM. I've hit that on research parkway right outside of campus lol

My knock count is pretty low and I did plenty of pulls in my datalog.

iCrap

Yea 80 would be easy. I hit 87 in my third pull before i had to back off and still was only at 5k.

I'll take a look at your logs again... i wonder why i get so many knocks on hard acceleration...

iCrap

So yea you don't have many knocks but you didn't do the same thing i did. When I just drove normally like that i had similar results.

Downshift into third (probably fourth for you) at 70 and do a pull to 95. I saw 106 knocks doing this.

On my 0 to 80-ish pull in third i only saw 4 knocks.

I don't understand though why it's the worst in second. 300 k count at the top of 2nd.

BaoZZeR

Yeah i have MT, I see your your problem is. My pulls were cruising at 2k rpm and than slamming the gas pedal but you cant do that, well im not sure if you can lol

iCrap

Yeah I can do that, but the problem is my gears are so much longer that the top of third is like 125-130. my 2nd is probably equal to your third.

Dime Feng

@iCrap
I need a clean 3rd gear WOT otherwise the graph is inaccurate, and yes I know that would be going 100-115 mpg on our 3rd gears lol.. I did my pull 2am in the morning with my radar detector on max settings ;D
I need something like this.

iCrap

I'll have to try and find somewhere to do it... do you also have an auto? And it won't work on a clean 2nd WOT either right?

Dime Feng

Nope doesn't work. It tells me i have 280 hp on 2nd gear pulls lol.
I need good clean 3rd gear WOT pulls starting at 2-2.5k rpms all the way to redline.

UTAH TSX

My 3rd gear auto is 115 MPH at 8300 RPM, that ticket would be a big one, and the knock sensitivity had to be adjusted on my tune with vit because of loud exhaust loose fitted forged pistons h beam rods heavier valves and stiffer springs all made the sensor say it was knocking when it was not

iCrap

Ok i'll have to find somewhere to go 115mph lol. Without getting a ticket for reckless and going to jail.

ssjoeboe9

^ it's not worth it bud. I would try auto tune again. Then Vit... Or just buy the rv6 pipe then you'll be in the right range for the calibration

optimusaccord

I agree with this guy! ^^

Yeah, one thing to be aware of, my tune is with a CAI, and the rv6 downpipe. So, there is quite a bit of restriction in the exhaust stream that your motor has to deal with, that mine simply doesn't.

I'm not sure HOW this plays into knocking, or not knocking, or whatever, but just so that you are aware. We are not dealing with the same set of variables.

iCrap

Yea that is true. I should just get a rv6 pipe.
Also, vit would still want 3rd gear runs anyway right?

UTAH TSX

Vit did most of my tune in second gear about 75 MPH and the last two or three in 3rd, but my car goes from 50 to 115 in a matter of seconds compared to stock that took forever to get going that fast (evil laughing giggle) god I love my car now

iCrap

i can't even imagine a boosted 500whp (or whatever it is) Cu2. Must be fun. REALLY FUN. lol.

Cu2Suspect

lucky I wanna get the SC next year....

ssjoeboe9

^^ I've only got a few more months!! Ahhhh it feels so good!

thunderbt3

Thinking out loud:

More restriction means = engine can't push out hot exhaust gasses quickly.
Hotter exhaust gasses = warmer head
Warmer head = warmer intake charge
Warmer intake charge = more prone to pinging/knocking

RV6 PCD = better exhaust flow = lower temps = less pinging/knocking? = WIN!

Way back in the CT-E Prototype CU2 supercharger days, I asked them if they were testing a stage 2 kit (smaller pulley, more boost). They said that they did test it, but had issues with the precat overheating. Looking back, they were probably faced with the precat choking the flow, building up too much heat along with the heat generated by compressing the air which would cause too much knocking.

optimusaccord

Yeah, seems reasonable to me...

ssjoeboe9

I don't necessarily know that's the reason but I think you might be close.

Rv6 pipe decreases the pressure by making a larger pipe with less flow restrictions. With less pressure to push the exhaust gases out then the pistons put less work into pushing exhaust gases out and put more work into turning the crank AKA more HP.

Im not so sure the whole heat soak theory proves pinging since its the same reaction in the chamber and eventually the RV6 pipe will reach same elevated equilibrium temps as the OEM downpipe.

But I could be really wrong too..

optimusaccord

The Rv6 removes the precat entirely. While the pipe may get the same temp, there is far less material to trap heat next to the head. My pipe is also heat coated, much like the turbo, turbo pipe and downpipe in the impending boost setup.
The OEM pipes simple inability to flow as freely as the rv6, causes higher cranking losses, which you mentioned....

I was going somewhere with this, I promise you... and it's gone....

Oh, I think it may lead to hot spots in the head, and thus the combustion chamber, which could lead towards the knocking, and combined with his 91 octane gas, could cause the issues he is experiencing.

ssjoeboe9

^^ lol that happens to me all the time.. explaining something then you're like wait, what was I saying? haha

Yeah it would be interesting to get a temp gun to check OEM vs RV6 after driving. If the RV6 does stay significantly cooler it could def make a difference in heat soak causing pinging.

I guess I was more wondering why we would get moaaar ping with your calibration than without. What is the exact change that's causing it to shoot up?? It not like we are generating moooar heat than before the calibration... or maybe we are with being in VTEC range 30% of the time rather than say 20%.... WHO KNOWS?! Maybe since there is more combustion happening then there really are higher engine temps, then that would def explain why you (optimus) dont see as many knocks cause your RV6 allows it to stay cooler..

maybe?

optimusaccord

I would imagine that in a N/A to make more power you advance the timing, and if the oem map is rich, run the fuel slightly leaner. Both of these will allow more air in in an N/A setup, all other variables being the same.

It's possible that simply the advanced timing, and the clock (read advance (I believe ) ) VTC, and slightly leaned out top end may be causing this??

Dime Feng

Hey Utah you know how long the eTune takes to be a full tune? I'm on his 3rd map that he sent back and the only thing I notice is my mpg gets 2-3 more mpg, but my vtec is at 5800 . Gonna share my eTuned map's to see what changes he made from stock. Will share everything he's giving me so thank me guys lol. I saved some people from a $180 tune if u got the same mods as me.

ssjoeboe9

Hey dude^^ I promise you'll get your money's worth by being apart of this community. I plan to do the same when I install all of my parts as well. The more we share, allows others to do great things on this platform. I definitely appreciate it and I know everyone else does as well!

iCrap

So i finally hit 7k in 3rd and I wasn't datalogging. Oh well.
It's about 110 mph btw.

Also dime feng, what mods are on your car?

UTAH TSX

It took 43 maps for me, most likely less for you, I don't think you should share Vits tune with everone unless he is ok with it.
He has no cam advance set yet so you have a lot to look forward to (POWER)

Dime Feng

43 maps lmfao. Oh boy -.- there goes my gas.. I don't think he would mind me sharing the maps cuz I'm the one paying for it, but then again I'll just ask him if it's aright with him before I share the final map.

ssjoeboe9

If it's your tune, you've payed for it, you can share it or not share it with whoever you want. Even with the same mods no one will ever exactly the same calibration. That's what Vit makes his money on, people want something that they know was specifically tuned for their car.

Me personally, I know your final tune will be close enough to optimal that it won't really matter. It's a stepping stone for more parts and better base calibrations.

iCrap

Yeah you are paying for it, you can share it.

tsxronald

I bought my lashpro a few weeks ago for 595. Eric's racing will tune the car in 3 weeks after installing a new Exedy clutch with light weight flywheel, tune up and valve adjustment.

Dime Feng

New Calibrations I got back from vit.

Dime Feng

Is this going to be a Dyno tune that tunes for WOT only?

iCrap

Hey dime feng what is the changelog in your new calibrations?

Dime Feng

What do u mean by changelog? What do i notice different from the previous maps? If thats what ur asking Rev0.1.5 has less aggressive shifts, but vtec is still @ 5800. He hasn't started tuning for cam angle and stuff like that. This is taking pretty long for a final tune imo... but hey full tune for the street.
I could've went for a dyno tune w/ blacktrax performance but that only accounts for WOT not street driving.