How much hp do you think i'll gain?

**sfletch2000** · 03-12-2007, 08:44 AM

I 'm gonna wait till i get the rest of the stuff i ordered this weekend to put my lid and bevel on so that i'll see a night and day difference. Just wondering how much hp i can expect to gain from the these mods.

MTI Lid
K&N
Smooth Bevel
Pacesetter Jet Coated Headers
Y-pipe
Underdrive Pulley
Plus i'm gonna Gut my cats

Already have flowmaster catback, i know they suck came on the car when i bought it probably will replace the muffler in the next couple of months.

Also putting on these but no power increase
Sub frame connectors
Boxed Lower control arms
160 Thermo

Next its drag radials

**Danger731** · 03-12-2007, 09:23 AM

45 rwhp +/- 5 horses, I'de guess a final of 345-355 ?

**GottaHaveLS1** · 03-12-2007, 09:26 AM

Originally Posted by Danger731

45 rwhp +/- 5 horses, I'de guess a final of 345-355 ?

I'm no expert but I wouldn't say that's accurate. You'll probably get around 10hp for the intake and thermostat. Plus another 20-25 hp for exhaust. are you getting it tuned? that will net you more hp. The SFC and other stuff will help a lot and make the car feel stronger.

**TRY ME GT** · 03-12-2007, 09:28 AM

A very noticable difference. be sure to get the car tuned after your done. that alone will make a huge difference. Id say 40-50 hp. def a good gain man. enjoy!

**TRY ME GT** · 03-12-2007, 09:30 AM

NOTE: when you change the thermostat it will NOT make the car run colder until you get it tuned. I know that sounds stupid because it is a mechanical thermostat, but the computer wont let it do that. have your fans changed to kick in at a lower temp.

**sfletch2000** · 03-12-2007, 09:55 AM

Ok that maybe a problem, not sure if anyone tunes LS1's out here in Bakersfield but i'll have to check into it. We do have 300,000 people here so there has to be somebody.

**sfletch2000** · 03-12-2007, 11:30 AM

Just remembered i'm an hour and a half away form oxnard ca, where granatelli is located. Gonna have to make a trip out there in a few weeks after i put my mods on.

**TRY ME GT** · 03-12-2007, 11:33 AM

good idea. $ well spent

**GMS Fleet** · 03-13-2007, 12:18 PM

Originally Posted by sfletch2000

Just remembered i'm an hour and a half away form oxnard ca, where granatelli is located. Gonna have to make a trip out there in a few weeks after i put my mods on.

What a small world

I'm Mike the person who talked to you yesterday. Like we discussed for custom tuning check out A&A Corvette in Oxnard. Supposively they are the best LS1 tuners out there but they are usually extremely busy. If you ever need a welder, Ken'z Muffler in Oxnard does a phenominal job.