HP and mods question
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TECH Enthusiast
Joined: Nov 2002
Posts: 594
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From: Murrells Inlet, SC
HP and mods question over the stock 325 hp that the SS has what kind of gain in hp would I see with the following:
-SLP high flow lid
-HPP3
-K&N air filter
And also, what kind of increase over the stock 325 would I see with the following:
-SLP airlid
-Holley Powershot filter
-Jet Performance chip
-Granatelli MAF Sensor
-BBK Throttlebody
-SLP smooth Bellows
-Edelbrock Shorty Headers
-SLP Y-Pipe
-Borla Cat-back exhaust
These are on two seperate cars so if you could give me an idea in what I would see only in the numbers that would be great.
-SLP high flow lid
-HPP3
-K&N air filter
And also, what kind of increase over the stock 325 would I see with the following:
-SLP airlid
-Holley Powershot filter
-Jet Performance chip
-Granatelli MAF Sensor
-BBK Throttlebody
-SLP smooth Bellows
-Edelbrock Shorty Headers
-SLP Y-Pipe
-Borla Cat-back exhaust
These are on two seperate cars so if you could give me an idea in what I would see only in the numbers that would be great.
Re: HP and mods question I'll give you an estimate and my opinions. This is all rwhp.
Any aftermarket lid: 10
Any filter: 0
HPP3: Some have gained 3, some lost 3. Go with Predator.
Jet Chip: Couldn't tell ya. Probably not more than 2.
MAF: Same as HPP3. Some people have nothing but troubles, others have gained around 5 or so.
Throttlebody: Don't know.
SLP Bellows: .1 if you're lucky
Shorty Headers: 5, not worth the money for an LS1. Save up a little more and get LTs, 20+ gain.
Y-pipe: I've heard 0, I've heard 5. Don't know for sure.
Cat-back: Around 5.
Any aftermarket lid: 10
Any filter: 0
HPP3: Some have gained 3, some lost 3. Go with Predator.
Jet Chip: Couldn't tell ya. Probably not more than 2.
MAF: Same as HPP3. Some people have nothing but troubles, others have gained around 5 or so.
Throttlebody: Don't know.
SLP Bellows: .1 if you're lucky
Shorty Headers: 5, not worth the money for an LS1. Save up a little more and get LTs, 20+ gain.
Y-pipe: I've heard 0, I've heard 5. Don't know for sure.
Cat-back: Around 5.
TECH Fanatic
Joined: Sep 2002
Posts: 1,306
Likes: 0
From: DETROIT MUSCLE
Re: HP and mods question i had the top three and the lid is a consistent 10..the hpp3 had me feelin a small gain outta the hole but returned it when i talkd to another ls1 owner and he said "it f$ckd up my trans" whether or not this is possible im not sure, but i returned it since the gain was not worth 335$! and last i was told the K&N was good for 1 hp. ther ya go hope it helps
