help me go fast!

[PaRaDoX]

hello.. teh turbo goes on this weekend and i need some idea's what to do so i can leech all the power out of my car. and essentially get those 1/4 mile times down

first thing im doing is
3" cat back exhust (dump pipe is 3")
3" highflow cat converter
tune her,
heat wrap + heat shields
LSD with 3.45s or 3.7s (not sure yet)

invest in a set of slicks

is there any other cheap mods to do to a turbo setup to untap the power of teh turbo!

im aiming to run 12s at 10psi...and if i get round to it 10s at 20+ psi (with transmission work + forged internals)

ive got some spare heads, what if i got the compression dropped to say 8.1:1 and ported with 12psi? with copper headgaskets

[PaRaDoX]

Just booked in for a 3" cat back exhust, 2 mufflers (size to be determined)
$300 custom made to suit my car(madrel bent)

[HoZy]

Your better off going a twin catback system... Yes more expensive, but more flow over a single 3"

Cheers
MaT

[PaRaDoX]

i was told go single 3" for turbo... anyway gotta remember the compressor wheel is just a little smaller than 3"... after all back pressure is everything on a turbo

[Not_An_Abba_Fan]

I disagree with you on that Hozy, the outlet of the turbo is only 3" so there is only so much flow you can get out of there. You can go single 5" if you wanted but it won't flow any better than the 3". Stick with 3" but go with perf tube mufflers and mandrel bends. $300 is very cheap...usually a good 3" muffler is $200 then the pipe on top of that and labour.....you must have pictures of his wife.....

[HoZy]

i was told go single 3" for turbo... anyway gotta remember the compressor wheel is just a little smaller than 3"... after all back pressure is everything on a turbo

Yes but your going to be lifting boost. a twin 2.5" catback system will perform better overall than a single 3" system. any GOOD exhaust place will tell you that.. Theres a turbo vt s pac around me, running 13psi, went from single 3" to twin 2.5" an gained 13rwkw....

Yes it's about pressure, but if it cant' push it out, single systems have too much restriction at the Y piece for performance setups...

Cheers
MaT

[PaRaDoX]

i dont have a Y peice anymore hozy...

they quoted me $300-350, this shop does alot of custom jobs, its where VP luke got his exhust for his VP...

[SweetWagon]

the only way for a twin system on your car would be if it split into 2 after the dump into 2 cats, its hard to say if it would work better, although you wouldnt have a single cat restricting the whole sytem.

[HoZy]

go twin turbo LOL jokin mate..... GOodluck with it all

[PaRaDoX]

lol ive been thinking about twin, would be alot more work....

it'd look sick but not nessecary, better, cheaper ways of getting more power

[Emackulation]

Wow, look how far you have come ey. I havent posted here for a while. I'm glad I got in this post early and didn't have to read through 10 pages of posts haha.

With the exhaughst system I think the 3" will be fine, I mean look of most of the turbo cars, they have it, so it must be fine I say.

Other then that I really dunno what else you can do, yep this post is pretty useless. Weight reduction??

[fazz1977]

From what you were telling me on msn that time, it's gonna be a weapon.

I'm just concerned with fixing the paint on mine.

[AirStrike]

12's............hmmmmm not as easy as you think.

[PaRaDoX]

12's............hmmmmm not as easy as you think.

i know, BUT if you dont set goals you wont go anywhere man, i know im not going to go out and run a 12, but i think with a bit of work its doable

[10000_fists]

You could make up some sort of air intake for it so the turbo's will get lots of nice, cool air. if it's auto get a converter with a higher stall and shift kit, billet/corvet servo's (if not already done), higher flowing injectors and fuel pump, bigger fuel lines, fuel pressure regulator.

[defa]

i would just go the single 3 inch. i was talking to a bloke the other weeka dn he is getting 260 or 270 rwkw with a 3 inch exhaust..

[VNV6VENGEANCE]

ok lets get this straight. I have worked on twin turbo setups on vp's a single turbo setup on a vn 3.8ltr. Your most important thing that you have missed is your cooling system. You are either going to need to stick an intercooler on her or get a good tuning specialist to fit and dyno test an optimum water injection setup for your psi requirements. I would recommend an intercooler if you want be pumping up the boost as the water injection kits work fine until you muck around with boost, whereas most intercoolers have ranges between standard 6psi-20psi boost limits. Don't listen to hozy about the 2.5 inch or twin cat back system. Your not running a 600hp car so why go crazy on twin systems that are not needed. My mates has a 400rwkw turbo vp but he's got a single 3" exhaust. Why because its the best PROVEN setup for a turbo. Also if u want to get some extra power out of it then high flow the turbo make sure the piping is stainless on cooler and exhaust and uyou should have a nice ride. Not sure about the 12's though. Did you seen the price tag on Vengeance after all the mods. They put like 20k into her and she still didn't run 12's...she might have now though?

[SweetWagon]

he's already bought and mounted an intercooler for it, its in one of the other threads somewhere

[cruzncommo]

NOS 200HP shot will help

[Soybean]

Would 3 inch be big enough though??
cause i know some of the gt-r skylines use 4 inch systems and they are only 2.6 litre.
unless they are running like 15-30 psi of boost i cant see a 4inch exhaust being right.
hmm although the engine will be producing the same or maybe a little more exhaust gases they'll have to flow through a turbo so there would already be backpressure there so...
what is the general rule with turbo exhausts?
im confusing myself can someone clear this up for me.lol.

And paradox Good luck with the project

[SweetWagon]

you have to remember, its something like for every extra inch in diameter, it will flow 3x more. So for eg. 3inch will flow 3x more than 2inch. 3inch will be plenty i reckon.

[anton1o]

- Turbo back exhaust
- Dual Stage boost controler(8psi off launch so you dont cook tyres - 12psi when your hoping along)
- a GOOD cold air intake setup running to the filter.
- Run a single light when racing, with a different intake setup that runs directly to the turbo.
- Intercooler piping not incredibly large so you dont create any lag, 2.5" piping will be fine.

All i can think of atm

[immortality]

a boost controller would help, you can get really fancy ones that give different boost levels for different gears etc. that way you'll have traction ofthe line up to the redline in first and then get big boost when hitting second etc.

[defa]

he has a 10 psi wastegate i think. so i don't know if ya can adjust them..

[AirStrike]

ok lets get this straight. I have worked on twin turbo setups on vp's a single turbo setup on a vn 3.8ltr. Your most important thing that you have missed is your cooling system. You are either going to need to stick an intercooler on her or get a good tuning specialist to fit and dyno test an optimum water injection setup for your psi requirements. I would recommend an intercooler if you want be pumping up the boost as the water injection kits work fine until you muck around with boost, whereas most intercoolers have ranges between standard 6psi-20psi boost limits. Don't listen to hozy about the 2.5 inch or twin cat back system. Your not running a 600hp car so why go crazy on twin systems that are not needed. My mates has a 400rwkw turbo vp but he's got a single 3" exhaust. Why because its the best PROVEN setup for a turbo. Also if u want to get some extra power out of it then high flow the turbo make sure the piping is stainless on cooler and exhaust and uyou should have a nice ride. Not sure about the 12's though. Did you seen the price tag on Vengeance after all the mods. They put like 20k into her and she still didn't run 12's...she might have now though?

No they couldnt get it to run 12's because they were to busy running 11's.