This is odd, where did my power go?

[SHERMANTURBO]

All my mods are listed in my sig.

Just installed ZZP headers DP and Magnaflow cat last week.

Used exhaust sealant for the DP so I wouldn't have any leaks.

The car ran so much better and had tons of power, must have been perfect for my tune.

Now and for tha last 2 days, I have acceleration issues. Wide open throttle seems to do nothing, in fact throttle at about 50% has way more power.

I had my oil changed today thinking that it was just sluggish with old oil but that made no difference.

One really weird thing I noticed though, my gas tank was a little under 1/4 tank and before I filled it, I noticed like a white residue on the inside of my tail pipe over the usual black residue.

I wiped it off and haven't noticed anything so far but have more driving to do.

I plan to do all the general checking, plugs, vacuum lines, injectors being clogged, fuel filter, etc.

I am hoping someone may have had this exact issue maybe in general or after installing the headers. I am worried the 'high temp paint' inside the headers may have clogged the cat by burning off like the outer bits do but I didn't want to break the seal to peak inside. Plus my boost is staying under 16 psi.


I guess this is what you get with mods and tuning, a learning experience, the hard way.

[Dainslaif]

From what I've read on other threads, your boost should drop a little when you go to a bigger exhaust due to less back pressure.

[theneelster]

Originally Posted by SHERMANTURBO

All my mods are listed in my sig.

Just installed ZZP headers DP and Magnaflow cat last week.

Used exhaust sealant for the DP so I wouldn't have any leaks.

The car ran so much better and had tons of power, must have been perfect for my tune.

Now and for tha last 2 days, I have acceleration issues. Wide open throttle seems to do nothing, in fact throttle at about 50% has way more power.

I had my oil changed today thinking that it was just sluggish with old oil but that made no difference.

One really weird thing I noticed though, my gas tank was a little under 1/4 tank and before I filled it, I noticed like a white residue on the inside of my tail pipe over the usual black residue.

I wiped it off and haven't noticed anything so far but have more driving to do.

I plan to do all the general checking, plugs, vacuum lines, injectors being clogged, fuel filter, etc.

I am hoping someone may have had this exact issue maybe in general or after installing the headers. I am worried the 'high temp paint' inside the headers may have clogged the cat by burning off like the outer bits do but I didn't want to break the seal to peak inside. Plus my boost is staying under 16 psi.


I guess this is what you get with mods and tuning, a learning experience, the hard way.

Maybe they sent you a bunk cat. Did you get a high flow cat? That whole white residue thing I've never heard of though.

[SHERMANTURBO]

Just came back from good ol Autozone.

I am throwing a P0133 code sensor 1 bank 1.

I am guessing it was from when we did the header install, you get an extender for the front O2.

It is either loose or bad. Gonna funk with it and see.

I like to post this crap here so one day someone with the same problem comes here for help ( and hopefully does a search) and finds the answers they need.

You rock Redline forums!
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Wait a minute, nobody else with the same code has had a performance issue, right?

I have the engine light turned off through HPt btw.

WTF? Back to square one.

[theneelster]

Originally Posted by SHERMANTURBO

Just came back from good ol Autozone.

I am throwing a P0133 code sensor 1 bank 1.

I am guessing it was from when we did the header install, you get an extender for the front O2.

It is either loose or bad. Gonna funk with it and see.

I like to post this crap here so one day someone with the same problem comes here for help ( and hopefully does a search) and finds the answers they need.

You rock Redline forums!
-----------------------------------

Wait a minute, nobody else with the same code has had a performance issue, right?

I have the engine light turned off through HPt btw.

WTF? Back to square one.

Bad o2 sensor isn't really going to do what you described imho. You can get a new one on ebay for like 40 bucks...it's listed somewhere the guy who sells em.

I'm thinking it's the cat, check the cat.