Cost efficient mods

[whitedudedown]

i have a '99 GP GT, 4-door and bone stock, i bought it used and its about time to replace the plugs and wires, so i was just wondering if the "Performance Iridium 4" plugs actually give any kind of power increase/ mpg increase or if they just say that to get more money

also thinking of a K&N air filter just for fun but i want to know if their worth the money

P.S. - im trying to beat this tool at work with an Integra who just barely beats me from a 20 roll so any advise is greatly appreaciated

[BlitzGT]

You can make FWI for like 40 bucks from stuff from home depot.
http://www.grandprixforums.net/f73/4...take-2219.html

As for general tune-up stuff. Get some NGK TR-55 gapped at .60 and a 180 thermostat.

You can have the Ubend also removed from behind the cat.

[Sabrewings]

Best plugs for a mostly stock car are the AC Delco iridiums.

[Malefic_GP]

headers, exhaust, and intake will do the trick. Thats like 50 HP right there or you could just get nitrous, but don't go more than a 50-75 shot. Some people go over to 104 shot, but thats just crazy unless you get forged pistons.

[Sabrewings]

headers, exhaust, and intake will do the trick. Thats like 50 HP right there

You've got to be joking. Headers, exhaust, and intake on a L36 will probably net maybe 20HP.

[TDCRacing]

You've got to be joking. Headers, exhaust, and intake on a L36 will probably net maybe 20HP.

Now your on the right track

[Malefic_GP]

What are you? A noob?

My SLP header gave me 25 hp, SLP exhuast = 15 hp, and K&N intake = 17 hp. A total of 57 hp added on.

For the 99 looking at the mods I see that the K&N intake gives him 13hp, SLP headers =25hp, and SLP exhaust = 15hp. A total of 53hp.

The headers gives him the 20 hp you said and 5 hp more. Just go on 3800performance and look up the parts and hp.

[Andrew_99GTP]

What are you? A noob?

My SLP header gave me 25 hp, SLP exhuast = 15 hp, and K&N intake = 17 hp. A total of 57 hp added on.

For the 99 looking at the mods I see that the K&N intake gives him 13hp, SLP headers =25hp, and SLP exhaust = 15hp. A total of 53hp.

The headers gives him the 20 hp you said and 5 hp more. Just go on 3800performance and look up the parts and hp.

Please tell me you are kidding.

[spidamanSS]

LOL!!!

[Randy_W]

Wow! So if I go to JC Whitney and get $200 worth of do-dads, I really can have 600 h.p.!!!

[GTPJOE90]

i have 3400 HP so idc about ur little mods......... jet engine in a gtp?? haha

[Deezul_AwT]

What are you? A noob?

My SLP header gave me 25 hp, SLP exhuast = 15 hp, and K&N intake = 17 hp. A total of 57 hp added on.

For the 99 looking at the mods I see that the K&N intake gives him 13hp, SLP headers =25hp, and SLP exhaust = 15hp. A total of 53hp.

The headers gives him the 20 hp you said and 5 hp more. Just go on 3800performance and look up the parts and hp.

Have you dynoed your car to prove this? If you also read 3800 performance, the number boosts given always say "on a stock." You can't just start adding them all together, as once you put that first mod on, it's going to decrease the gain from another. With all my Impalamods, maybe I'm at 300 at the flywheel, but that would be ideal temps and with a custom tune, not from just slapping the mods on and buying a ZZP PCM. That's not to say I'm not happy with them, but I knew going in I wouldn't hit those magic numbers and would ALWAYS hit the max for all the components every time.

[Sabrewings]

What are you? A noob?

My SLP header gave me 25 hp, SLP exhuast = 15 hp, and K&N intake = 17 hp. A total of 57 hp added on.

For the 99 looking at the mods I see that the K&N intake gives him 13hp, SLP headers =25hp, and SLP exhaust = 15hp. A total of 53hp.

The headers gives him the 20 hp you said and 5 hp more. Just go on 3800performance and look up the parts and hp.

On each of those product's page, it says "up to XX amount of HP". That assuming the absolute best conditions for that one mod alone. They will give you less than that, and as they add together their cumulative effect becomes less.

But, make way for you, the more experienced one... Apparently I'm just a noob...

[notladstyle]

What are you? A noob?

My SLP header gave me 25 hp, SLP exhuast = 15 hp, and K&N intake = 17 hp. A total of 57 hp added on.

For the 99 looking at the mods I see that the K&N intake gives him 13hp, SLP headers =25hp, and SLP exhaust = 15hp. A total of 53hp.

The headers gives him the 20 hp you said and 5 hp more. Just go on 3800performance and look up the parts and hp.

you forgot the 10hp NOS windows sticker add on.

[Deezul_AwT]

you forgot e 10hp NOS windows sticker add on.

Remove the seats, spare tire, and engine lifts. That 30-40 lbs = 5 extra HP minimum!

[Andrew_99GTP]

Honestly Malefic_GP you have to take what aftermarket performance shops say about their products with a grain of salt. They will sugar coat everything and say how good it is because they want you to buy their product.

[TDCRacing]

3800performance also states that in there stage 6 package you can run a 3.0 pulley on stock injectors...im at 86% duty cycle now...with a 3.2.....anything over 80% range is debatable....but i guess since it says it on 3800 performance and im a noob....nevermind im done

[TDCRacing]

What are you? A noob?

Far from. Andrew_99GTP is very experienced at what he does as well as many many others and i think most people know that..most people

[Andrew_99GTP]

Far from. Andrew_99GTP is very experienced at what he does as well as many many others and i think most people know that..most people

Why thank you , but I believe he was calling Sabrewings a noob.

BTW on your inj duty cycle you could probably squeeze some more out of the stock injectors buy doing a fuel pump rewire and the "Big Three" rewire. Also I believe the condition of your stock pump makes a big difference. Do you know what your fuel pressure is? I am not saying I would try to squeeze every little bit out of the stock inj though. Unless you don't plan on modding any further, but I have a feeling you will

[TDCRacing]

oh well lol....yeah you are correct on that info...im just not comfortable doing that...thats just me though..and yes lQ4 42.5's and xp on the way along with a 2600.00 tranny from tranny man being built right now