ZHP NA Project - More Power

[BerDz3nA]

Badd news the spacers for o2 dont cure the SES. Light it came twice this week.



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[Sockethead]

If you can, try adding a little more spacer to it. That's what another member did... I wish I could remember who it was....

[BerDz3nA]

If you can, try adding a little more spacer to it. That's what another member did... I wish I could remember who it was....

After many experiment i have decided to fully stock my car. I am reverting back to factory. I dont like how the magnaflow sounds, plus the headers didn't really made that huge difference. As for the intake K&N the stock box is way better heatwise.

[Sockethead]

Do you still have the stock ZHP exhaust? It flows pretty well and sounds much better with the headers. I may go back to the ZHP exhaust as well.
FYI, I only got 7-8 hp gain on the Dyno with the full Magnaflow exhaust over the stock ZHP exhaust

The one issue with the magnaflow muffler is that the inlets are dual 2.5 inches but the outlet is a single 2.5 that restricts to 2.25 at the Y for the tips. This is fine for non modded engines with cats in place but once you start increasing flow through the system with headers and in my case super charger, it becomes a real issue and it doesn't sound very good.

[Reasoned1]

You guys sure make me want to leave well-enough alone when it comes to exhaust, and I've been debating putting my stock airbox back on--although I love the sound of the K&N CAI.

[Sockethead]

yea it's a fine line between power and annoying

[rkneeshaw]

You guys sure make me want to leave well-enough alone when it comes to exhaust

Honestly, I think this is pretty true with quite a few things with these cars.

[kakashi169]

So you are telling me that you regret installing the headers now OP? lol

[Sockethead]

I don't regret installing my headers! Code out the secondary O2 sensors and the secondary air pump and leave the stock exhaust in place and you'll be happy! It will run and sound great with no check engine light

[BerDz3nA]

So you are telling me that you regret installing the headers now OP? lol

I put back the stock headers because at the moment i am trying to find the issue that causes:

1. At 1500 rpm when in 4 5 6 gear and i fully press the gas pedal the car jerks for about 1-3 secpnds and then accelerates
2. When accrlerating at 4 gear i can hardly reach 6000 rpm and i. 5 gear i cannot go past 5000 rpm no power
3. When i redline at neutral it misfires in the muffler
4. At idle when i turn ac on the car starts jerking


My assumptions

1. Fuel pump
2. Coil
3. Injectors


It must be either of these what do you think ?

P.S. ebay headers are a must mod !

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