popping noise in upper RPMs

[Losiracer2]

I'm getting this popping out my exhaust from 4.5K to redline. H22A engine, MP0A auto trans. Could this be related to a TPS issue? its also cutting in out out of VTEC, like its shorting out or something.

or would this be an EGR issue? since i'm running w/ it capped off right now, and have a CEL for it. But it didn't cause that when I first swapped it, so I wouldn't think it would cause it now.

[9tAkord]

Ignition timing or timing belt off?

[Losiracer2]

Ignition timing or timing belt off?

distributor was checked and is at 17* BTC, timing belt is brand new Honda OEM P13, all belts are new actually. Just had the engine redone from the head up before i swapped it about 2k miles ago.

But I'm just wondering...I had to add some section of wire to the Red TPS wire, do you think that could be causing any kind of resistance for that sensor?

[visualpoet]

Maybe. how did you make your connections? A bad connection will give you resistance issues.I've been watching to see if you get any info, but I haven't chimed in yet because I don't know much about the vtec engines, and I assume you're well aware that the popping is probably fuel detonation in the exhaust. (which is probably related to the vtec problem, and I don't know what's causing that)

Hope you get it soon. I'm always trying to learn something new!

[Fake Thug]

But I'm just wondering...I had to add some section of wire to the Red TPS wire, do you think that could be causing any kind of resistance for that sensor?

Whats it set at?

[d112crzy]

Reset your distributor to 15, not 17.

[Losiracer2]

Whats it set at?

well right now, idk, I need to get a good multimeter to it. The one I have didn't even register anything, thats kinda why the wire got frayed in the process and I had to replace it. Maybe I should just let someone who's good w/ wiring set it idk. I honestly tried for a good 20 min. to get it to register something, and I had no luck. So I cut away some of the insulation hoping that would get a better contact, and in the process, cut the wire.

I hope its from my shitty wiring job....Does it matter if the length of wire is 2 inches longer than the rest? would that cause this popping I'm getting in VTEC? fuck I wish there were more CB7tuners closer to me.

[jacobuchanan140]

don't you only have 91 octane there?

couldn't you get a pinging from not having the 93?

[HondaFan81]

well right now, idk, I need to get a good multimeter to it. The one I have didn't even register anything, thats kinda why the wire got frayed in the process and I had to replace it. Maybe I should just let someone who's good w/ wiring set it idk. I honestly tried for a good 20 min. to get it to register something, and I had no luck. So I cut away some of the insulation hoping that would get a better contact, and in the process, cut the wire.

I hope its from my shitty wiring job....Does it matter if the length of wire is 2 inches longer than the rest? would that cause this popping I'm getting in VTEC? fuck I wish there were more CB7tuners closer to me.

Sounds like you did a very shady job tinkering with the TPS wiring. I bet most of your problems have to do with this. You can find out with a multimeter and check voltage read out from the TPS at closed and open it by hand and monitor the readings. Should be a smooth increase all the way to WOT.

If you have some funky readings going on, then there is your answer.

d112crzy is correct on your ignition timing (should be 15 BTDC). Do you realize that setting it to 17 BTDC, advances it 2 degrees across the entire ignition map?

From what I hear, it wouldn't matter if you had more cb7tuners near you. You don't seem to truly listen and understand anyhow.

[Losiracer2]

one more thing I want to mention...Could swapping injectors w/o reseting the timing cause this situation? b/c on the previous injectors....i doubt they were the right ones...I had my swap guy set the timing w/ a timing light. Could that setting change once the injectors are swapped for other ones?

[d112crzy]

Wow. Are you fucking kidding me?

Fix your damn timing. You're 2 degrees advanced the ENTIRE RPM range. Too much advance causes detonation. You're runnning a LOWER octane level than the engine asks for.

Is it really that hard to grasp?

Why would injectors affect distributor timing? It makes NO sense at all.

Fix your damn wiring. You won't know know if the TPS is causing those issues until you FIX THEM.

[owequitit]

Sorry guys, H22's run just fine on +17*.

If you look at Honda specs, the timing setting is 15* BTDC +/- 2*. I have never had any problems running Honda's at the upper setting, and even know quite a few other qualified people that do the same thing.

It was also fine prior to him messing with the TPS. Well, it was at least hitting VTEC consistently.

It would most likely be a TPS wire issue. It might also be the octane, although truthfully, I think it was just a shitty install.

I have seen inconsistent running on JDM H22's with 91 octane from time to time, but never the issue he is having.

[d112crzy]

I've seen many cases where even advancing just a cunts hair over 15* I'd get audible detonation. And with that 91 octane..it just makes me more weiry. Also...who knows what spark plug heat range he's running. I'd recommend a step colder since he's running 91.

I fucking hate the west coast. WHy can't we have 93 like FL does? Here in WA we get 92 though.

[owequitit]

I've seen many cases where even advancing just a cunts hair over 15* I'd get audible detonation. And with that 91 octane..it just makes me more weiry. Also...who knows what spark plug heat range he's running. I'd recommend a step colder since he's running 91.

I fucking hate the west coast. WHy can't we have 93 like FL does? Here in WA we get 92 though.

Never had a problem with it.

We don't get 93 because too many people use premium, so they have to mix it down to be able to produce 87. That, and I am sure the government has something to do with it.

He may very well be running hotter plugs. You would think the dealers here would know better, but they only give you colder usually if you ask for it.

But, I still hold steadfast on my belief it was the install. It hasn't worked right since it was put in.

[Losiracer2]

wow. Are You Fucking Kidding Me?

Fix Your Damn Timing. You're 2 Degrees Advanced The Entire Rpm Range. Too Much Advance Causes Detonation. You're Runnning A Lower Octane Level Than The Engine Asks For.

Is It Really That Hard To Grasp?

Why Would Injectors Affect Distributor Timing? It Makes No Sense At All.

Fix Your Damn Wiring. You Won't Know Know If The Tps Is Causing Those Issues Until You Fix Them.

Chill The Fuck Out! I'm just trying to figure shit out. If you can't tell me in a NICE manner, then mess up someone elses thread.