Plog KR

[Lishap]

How much about will a plog usually lower KR?. I know headers will lower it more but just looking at the simpler install of a plog. Thanks.

[BillBoost37]

It kinda depends on how much of your KR issue is from flow of exhaust.

[Lishap]

Ohh got it. My engine is stock except for a K&N CAI, i just did plugs and wires about 10,000 miles ago, always run 93 and still see about 5* of KR at WOT. Is that normal in a stock engine?

[BillBoost37]

It can be..

Would you mind enlightening us on what you are driving

[Lishap]

Oh wow, very sorry about that. Its a 2004 Comp G.

[DanPrixGTP]

5* on a stock engine is pretty normal.

My car saw 7* while stock.

[Lishap]

Okay thats good to hear, i guess lol. Now i'm just curious as to how much people have seen a PLOG lower KR.

[dmahlikGT]

According to what ive seen in other people and on zzps website it lowers about 2* on avg. I have one and have no way right on detecting knock but car did seem to breathe better and better acceleration.

[blueguy]

'04+'s don't have a U-Bend...so that's a benefit.

Get a larger downpipe and the PLOG...I'm sure it'd take it away.

For the money you blow on a PLOG/DP...you can get headers for the cheaper on EBay and kill even more KR.

[Lishap]

I know headers would be more beneficial and about the same price, but there a little more involved with installation and i feel like a little bit of overkill for what im looking for. I'm not looking into deep modding the car i'm more of just looking to prolong the life of the engine.

[GTPpower]

Plog won't make much of a difference. The biggest restriction is the downpipe.

[blueguy]

Then I wouldn't even waste my time with the PLOG and throw a 3" downpipe on it and be done. You don't move enough air to justify it anyways if you just want more longevity out of the car.

[Lishap]

Okay thanks for all the help. I'm also assuming it wouldn't help too much with MPG's.

[dmahlikGT]

Yea it would,i got 15-20 miles more per tank after the plog.