What to do for performance on a 99 N/A SE - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 05-08-2007, 10:52 PM   #1
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Default What to do for performance on a 99 N/A SE

Just like the title says....

I just bought it on Saturday and love it allready. And I'm allready thinking about mods to do...

I'm pretty sure I can do an intake for pretty cheap.
What about exhaust? What is the best size? Would it be better to do single or duel?
Any other things to do to the engine? Other than Turbo,*/C, or NO2
How much can the N/A trans handle?
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Old 05-08-2007, 11:17 PM   #2
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i've looked into some of the possible alternative exhaust options. my findings as well as the findings of most of the people on this board, aside from a high flow cat, the stock exhaust is plenty and isn't holding you back.

some of the guys here are putting magnaflow mufflers for camaros but there is no perfomance advantage to it, though it does sound better.

do a search for PEMs as far as manifolds go. they're pretty effective and much cheaper than headers. also do a search for willwren'* ported lim thread. those two mods together seem to make the L36 come alive.
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Old 05-08-2007, 11:21 PM   #3
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About how fast do you want to go and how much are you willing to spend?
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Old 05-08-2007, 11:47 PM   #4
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i have gain more than half a second and 3 MPH from a cold air intake and kn 4750 and a drill 180 stat a L36 like cold air
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Old 05-09-2007, 12:40 AM   #5
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Quote:
Originally Posted by firebuick
i have gain more than half a second and 3 MPH from a cold air intake and kn 4750 and a drill 180 stat a L36 like cold air
You also have a lighter initial weight, and more than likely a more aggressive gear ratio. I would say a lot of your gain is coming from the fact youre learning to drive the car as well. Im not trying to say that your mods havent gained you time, but I think it comes from other sources as well.
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Old 05-09-2007, 01:36 AM   #6
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ROCKERS!
OR Headers

I got 1.8:1 rockers on mine and have headers on the way
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Old 05-09-2007, 04:45 PM   #7
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Quote:
Originally Posted by LittleHoov
Quote:
Originally Posted by firebuick
i have gain more than half a second and 3 MPH from a cold air intake and kn 4750 and a drill 180 stat a L36 like cold air
You also have a lighter initial weight, and more than likely a more aggressive gear ratio. I would say a lot of your gain is coming from the fact youre learning to drive the car as well. Im not trying to say that your mods havent gained you time, but I think it comes from other sources as well.
Actually his weight is about the same, and his gear ratio is i believe 3.05. I think alot of his gain is due to the loss of KR, he was seeing almost 6 degrees and now only sees about 2. As for driving his 60'* were about the same, if i remember right.
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Old 05-09-2007, 08:20 PM   #8
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I dont know how much money you are willing to spend, but if you go to the vendors forum... There is a company called Intence & they make a performance kit for your car that they say will gain you 25 hp. I think they run for about a $1,000.00 But the shure know what their doing.
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Old 05-09-2007, 08:31 PM   #9
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10 HP gain INTENSE Level 1 L36 Performance Package - $269.99

Quote:
INT-FWI-xxx - INTENSE™ Fenderwell Intake Kit
TST-180 - INTENSE™ High Performance 180 Degree Thermostat
ASP-605 x 6 - Autolite® 605(one heat range colder than stock) Copper Core Spark Plugs
PCM-xxxxx-xxxx - INTENSE™ Standard Powertrain Control Module

25 HP gain INTENSE Level 2 L36 Performance Package - $754.99

Quote:
INT-FWI-xxx - INTENSE™ Fenderwell Intake Kit
TST-180 - INTENSE™ High Performance 180 Degree Thermostat
ASP-104 x 6 - Autolite® 104(two heat ranges colder than stock) Copper Core Spark Plugs
3800-YTRR-XXX - Yella Terra 1.90:1 Roller Rocker & Pushrod Package for L67/L32
GVS-LS6 - LS6 Medium Load Valvesprings
PCM-xxxxx-xxxx - INTENSE™ Standard Powertrain Control Module
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Old 05-09-2007, 09:34 PM   #10
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Well I'm not looking to spend a lot of money on one thing.

I'd rather spend $1000 on a bunch of stuff than on one thing.

I'm more looking for cheaper things to do to start with. You know $200 or less

I figure that I could do a fenderwell intake myself from the local home improvement store.
Get a new muffler or make my own dual outlet from the AutoZone or Advance.

I know I probably need to atleast check about doing a tune-up. What all should I check/replace?

Anything that is usually missed on these things?
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