hello all!

[bobgagt1.0]

HI every1!

I'm new here (obviously). I've own a 2000 GAGT Sedan since july 06. got it with 100,000 miles on it and only added 19,500 in that time. currently my mod list includes:

pacesetter 2-1/2" catback exhaust
oversized CAT
180 degree thermostat
ported upper and lower intake manifolds
stage 3 cold air intake with k+n filter
fiberglass cowl induction hood
black halo headlights
black/chrome LED tail lights
Black 35% window tint
aftermarket OEM style bumper cover
Platinum spark plugs

Future mods:

Pacesetter headers (they'll be on the market by the end of summer)
exhaust mounted T3/T4 turbo charger with intercooler
Custom iridescent paint

Is it a rocket? no but I need to use it daily so I won't be doing much that will affect MPG besides the turbo. but it is starting to look and sound gooooood and now it can keep up with some of the more aggressive drivers here in NYC. The long term goal is to build the HP up to the 300-350 range since the tranny won't handle more than that. currently I think I'm in the 220-240 hp range so the turbo at 8 lbs of boost should bring me to right where I want to be.

any thoughts and opinions would be appreciated.

Thanks!

[robertisaar]

trust me you're not up to 220. 205 might be more reasonable though.
and when you say "exhaust mounted turbo" do you mean a remote mount or what?

something that is definitely choking the car: throttle body, and what do you mean by ported intake? upper, lower, or both?

and that iridescent paint: my uncle has owned/operated a body shop for almost 20 years and i'll tell you 2 things: it will be expensive and the novelt will likely wear off pretty quickly

other than what i said above: Welcome and post some pictures...

[bobgagt1.0]

trust me you're not up to 220. 205 might be more reasonable though.
and when you say "exhaust mounted turbo" do you mean a remote mount or what?

something that is definitely choking the car: throttle body, and what do you mean by ported intake? upper, lower, or both?

and that iridescent paint: my uncle has owned/operated a body shop for almost 20 years and i'll tell you 2 things: it will be expensive and the novelt will likely wear off pretty quickly

other than what i said above: Welcome and post some pictures...

LOL slow down, I'm not a mechanic, just friends with a really good one. Okay so 205hp is pretty good for how far this car has come. (it was a mess when I got it)

yes, I mean remote mounted if when you say that you mean mounted under the car and connected to the exhaust. (my buddy swears this will get me more HP than a traditional mounting position and he has a long history of building professional racers and building and selling custom high end parts for street, race and classic show cars so I trust him.)

The ported intake - lower only right now. I had to replace it when I found the old one had cracked and thought I might as well get that done since it was already off.

I may change my mind about the paint and I do know it can be costly, but my mechanic friend (frank) is opening up a new shop complete with large spray booth so all I have to buy is the paint and throw him a few bucks. as for the novelty wearing off... well it's about turning heads isn't it? besides I'll get tired of it whatever color I paint it. what ever color I choose will be in the silver/light gray family since I want to keep the color close enough to original that I don't have to change the title and registration info. (don't ask me why, i don't really know except that I like to put obstacles in my way to challenge my creativity)

Please tell me more about the throttle body "choking the engine". if you mean as far as it's size, well I thought about going up to a 62mm or a 65mm but since it is my daily driver, fuel economy is a concern. if someone were to give me an idea of the MPG drop off a larger TB would cause maybe I would consider it.

I have some before pics in an album on my page and I will be putting up some more current ones as soon as i can.

Thanks for the welcome and the criticism.
I'd love to hear more of your (or anyone else's) thoughts on what I should or shouldn't do to my car.

[robertisaar]

a larger throttle body alone won't hurt fuel economy... it does allow it to breathe easier in the top though. i think stock is 56mm? the 62 would be fine for a mild N/A car or a turbo car... 65mm might be too much(meaning no matter how lightly you touch the throttle, it'll try and take off like a bat out of hell... okay, not that bad, but at low speed it might cause some drivability issues)

i don't know enough about remote-mount turbos to help there...

also, if you only ported the LIM, the UIM will be a place robbing power as well. swapping to a 3500 UIM may be worth looking into, as they flow better than the 3400s, stock anyway, possibly fully ported as well.

any more questions?

[bobgagt1.0]

a larger throttle body alone won't hurt fuel economy... it does allow it to breathe easier in the top though. i think stock is 56mm? the 62 would be fine for a mild N/A car or a turbo car... 65mm might be too much(meaning no matter how lightly you touch the throttle, it'll try and take off like a bat out of hell... okay, not that bad, but at low speed it might cause some drivability issues)

i don't know enough about remote-mount turbos to help there...

also, if you only ported the LIM, the UIM will be a place robbing power as well. swapping to a 3500 UIM may be worth looking into, as they flow better than the 3400s, stock anyway, possibly fully ported as well.

any more questions?

Hmmm... I was thinking about porting the upper intake manifold but would swapping a 3500 uim get better results? would it end up being more work getting it to work right on a 3400 engine? I'll toss this idea around with my mechanic.

yes the Tb is 56mm right now. I will re-think the throttle body. maybe I can find a deal on a billet TB.

Thanks for everything.

[robertisaar]

Ben can tell you and sell you damn near anything you need. and i should hope so, he runs the store...

since you probably have no idea who i'm talking about, look for SappySE107, send him a PM, and he'll get you hooked up.

[bobgagt1.0]

Ben can tell you and sell you damn near anything you need. and i should hope so, he runs the store...

since you probably have no idea who i'm talking about, look for SappySE107, send him a PM, and he'll get you hooked up.

okay, i'll do that. thanks again!

[bobgagt1.0]

Just a quick update...

I had a miscommunication with my mechanic/friend concerning porting my LIM.... he did the UIM at the same time since "doing one would have been a waste of time" - his words. he just neglected to mention it to me until i recently asked him about it. but evidently he charged me accordingly when it came time for me to pay. evidently he was talking about them as 1 unit and I was thinking of them as individual pieces. I don't want anyone thinking about me as a lying noob that is just trying to look good on the forum... that's not me. sorry for the confusion.

[asylummotorsports]

A larger TB shouldn't hurt mileage and may in fact help it.

Effeciency = Horsepower and mileage.

56 is kind of small, but 65 might be a bit much. 62 will likely do it for now.

With a turbo (front or rear) you will have to re-think that anyway.

The 3400 UIM actually outflows a 3500 UIM in stock form, so your ported one is probably the best you are going to achieve N/A.

Anything else just ask. Lots of help available on here.

Have fun.

[robertisaar]

A larger TB shouldn't hurt mileage and may in fact help it.

X2 you remove some of the throttling losses by using a larger TB, but it doesn't help much at low throttle openings since opening a small TB a lot (but not at its limit, lets say 150cfm) is essentially the same thing as opening a large TB a little(and still flowing 150cfm), its the same amount of air. now when you get near the limits of the smaller TB, THAT'S when the larger TB will make a hell of a difference since the engine no longer has to work with so much of a restriction.

[bobgagt1.0]

X2 you remove some of the throttling losses by using a larger TB, but it doesn't help much at low throttle openings since opening a small TB a lot (but not at its limit, lets say 150cfm) is essentially the same thing as opening a large TB a little(and still flowing 150cfm), its the same amount of air. now when you get near the limits of the smaller TB, THAT'S when the larger TB will make a hell of a difference since the engine no longer has to work with so much of a restriction.

So if I understand what you're saying, I'll notice a difference when I open it up from a stand still (or a near stand still) or when ever I'm looking for some quicker acceleration Like having to pass an idiot on the highway that doesn't see my blinker and my immediate need to change lanes.

[robertisaar]

right, in normal situations, it might accelerate a little quicker, but its when you really open it up is when it will be worth it

[bobgagt1.0]

got it! thanks!