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No I think something is causing the timing to retard. And trust me, if it was running lean enough to break up before red line I wouldn't have pistons anymore.

I'm honestly thinking it's something with timing. That's why I was wondering what the timing map looked like.. but I don't think 5000 rpm on up was all that different from the other rpm points at WOT

I'll have to get a fuel pressure gauge on my car at some point. Still doubtful on the fuel filter being at fault, even if it isn't a lifetime filter. (I still say it has a much longer use life than the standard can filters which most people run to 100k+..) BUT that's beside the point. I will...

Isn't technically the "lifetime" 250k miles?

I'll have to look at it later today. Thanks for the idea! That makes sense too. I wonder what the timing advance is at 5000 rpm..

Now THAT is something I wouldn't have thought of.. Was the wiring just pulling out of the connectors or what?

Not on my piping...

Lol.. I'm done. This is ridiculous.

If I had administrative powers I would lock this thread. All admins seeing this, please do.

Good god man, you keep putting words on my mouth. Now get the hell out of my thread. You haven't said a damn thing that actually makes me want to go adjust my tps or change my fuel filter or check my cams.

I did the n/a cam swap. For fun. Just to see. As for the tps, it's brand new and I adjusted it correctly. Also. If it was sending the wrong signal to the ecu then unplugging it would make it run better. Would it not? The ecu doesn't need the tps to run.. And for the fuel filter it's a lifetime...

I am 100% willing to diagnose. I'm just not willing to waste my time and money doing it for things that aren't wrong. Fuel pump resistor not switching to 12 volts? Okay, I could kind of see that. Kind of. Not really, but I felt like I'd prove you wrong once. Then the fuel filter starving the...

Kkz, I'd really appreciate if you would stop posting in this thread. you're just cluttering it up with nonsense.

No i don't. Planning on picking one up with my next paycheck. Any idea on what to check? I've basically ruled out what I would assume would cause it..

Well if you posted something that made sense then maybe I'd believe the part about 15 years of experience.

Yes sir they are.

No point in doing either of those. It's not fuel delivery. If that was the case then it would break up at full throttle, free revving, and then break up a shit load worse under boost. The tps is calibrated. Not that it really matters. Disconnecting the TPS doesn't change it.

It's not spark blowout. There's no reason for it to blow out at zero boost. And it's done it with two different sets of cams... And it doesn't do it at part throttle but does do it at full throttle.. No cats, and i have no idea last time the fuel filter was changed. Probably the factory one...

Nope! No change.

I will jumper the fuel pump resistor and see if it changes anything.