SoFla01SSLookinstok

I bet upgrading the exhaust would net you 15+hp.

madmike9396

iTrader: (29)

Lol that sucks. Yea I know how that is. The anticipation is a bitch lol. Can't wait to get my rears swapped so I can dyno my car

Fullblast

iTrader: (17)

Really? So should I run 2.5 or 3" duals all the way back with an x pipe? I would like to keep my borla dual exhaust if possible. I could run 1 pipe to the muffler on 1 side, but what about the other side? I don't want to straight pipe it. Maybe a smaller boltsmuffler for that one?

MikeWS6

Most heads/cam setups make 400-430. A better set of heads would probably put you closer to 430. My old ls1 with a 228R and PRC 5.3 heads made 423 through a Y pipe setup.

Fullblast

iTrader: (17)

Yeah, I should have had Tsp port the heads. It's ok for now.This was my first build, so I'm learning all the time. Later this year I'll go aftermarket heAds and a bigger cam. The cars suspension can't even handle the power it has now.

I'm going to go with some milled prc 225 heads, along with a Cam motion Titan King 236/244 cam. I'll also delete the maf and get an sd tune. Also trying to find someone to dual it out. Exhaust shops say it can't be run over the rear axle. I tell them Kooks makes a 3" true dual system. Nobody wants to touch it though. I'll find someone, just gotta keep asking.

I'm hoping with prc heads, 236/244 cam, dual exhaust and sd tune It should be 450+ rwhp.

Most likely put 3.73 gears in as well. I have to constantly downshift big time to get good max power out of my current 228/232 cam.Once I get to 2800 or so she pulls like a bat out of hell though.

Right now I have to work on getting bigger tires and keeping it from spinning out in first through third. Got a mild amount of wheel hop to address too.

Track doesn't open here till this weekend, but I probably won't do **** for a quarter mile et because the car won't go anywhere but sideways if I gas it from a standstill. Even when I hit second she's all over the place. I have good Falken 275/40/17 tires on 11" wheels and that just ain't enough rubber. Gonna have to go with some Nitto 315/35/17s. Hopefully that will help. Maybe a panhard bar and adjustable rear shocks. Any suggestions on this traction problem?

HCI2000SS

iTrader: (2)

Just a good set of dr's alone will help that traction problem big time

Mike TA

iTrader: (6)

I think your on the right track. I've never really got hung up on peak HP/TQ numbers but always have a ballpark in mind. When reviewing dyno results I am wayyyyy more concerned with the power under the curve than peak output. I've always just considered a dyno as a tuning tool. Nothing more. Get that suspension dialed in to handle what you have before worrying about more power. What good is an additional 10-20 HP if you can't get it put down anyway?
If you are gonna run that thing at the track with some big sticky tires I would start putting aside money for a new rear as well. On a M6 under those conditions some survive pretty well....most don't.

MikeWS6

I mean if you're happy with the car just leave it. 400rwhp is a good street car. That may have also been a stingy dyno.

Fullblast

iTrader: (17)

I'm happy with it for now but I'll more than likely change the gears to 3.73s so I don't have to downshift as much and leave the motor as is except for adding a vortech supercharger in the future.

Fullblast

iTrader: (17)

I just had the clutch replaced because my Luk disintegrated on me.
The mechanic found that both wires to the o2 Sensors are cut off and neither are plugged in! He said that has to be hurting my tune causing it to run like ****. Lately it has been smelling very rich and said that's probably why.

He said the maf is not going to read correctly when it can not measure the oxygen in the exhaust.

So he's going to wire them up for me and then I will get another tune. Maybe I.Will beat 406 hp then

Chad told me he did a cam only Ls1 with Bolt ons with a Btr stage 2 cam and it put down 403. So I definitely should be putting out more than 406.

jmilz28

iTrader: (13)

Get that thing dualed, 2.5" duals will be plenty, and you'll see 15-20rwhp more. You had a serious tune issue - the O2s - surprised you got 400+ out of it. A good tuner will likely get you more as well...and good tuner would have checked your state of maintenance beforehand. Add in a stingy dyno and that's why you're low. Get the car set up right and have it retuned by PatG or LMR, you'll be bumping 450/410 on a dynojet. How's your fuel pump and filter?

Fullblast

iTrader: (17)

Yeah the guys that tuned my car (Sxt Performance) didn't hook up any pcv equipment or my steam vents....and didn't bother to check for the o2 sensors
. Hell my oil sensor line is cut and my low oil light stays on. Sxt told me it was "because the car is older" Haha....what a joke. They didn't reset my fans for the 160 thermostat either.

So now I've been having Bad Chad do all of my work and fixing Sxt's screwups.

Pat G does most of his tuning and cam spec'ing.
He told me Pat Gs dyno is a heartbreaker because it's a mustang dyno lol....but you will get the best tune around.

So I'll get this 02, steam vent and pcv problem taken care of them take it to get a proper tune. I also think it needs to be tuned again because I just had a 12.5 pound flywheel installed and it revs very fast.

KW Baraka

iTrader: (7)

Yes.....the 'best' tune around.

At the end of the day, that's all that really matters !!

KW