[Invictus]

Hi, i've just recently become the proud owner of a 1999 mustang (35th anniversary edition) that was origionally a V6.

It's been swaped with a 4.6L V8 (from a 2003 GT w/ 22,000 miles)
- entire rear end, tranny, etc. has been changed to compliment new engine
- SLP loudmouth exhaust system (3.5")
- carbon fiber hood w/ black hoodscoop painted black
- carbon fiber Z3 style front fenders
- cold air intake

.. pretty much it as far as mods go.. - will post pics / profile soon!!

Basically my dilemma is that I WANT MORE POWER!!!
I raced a 350z tonight, I was quicker off the line butt I gott my ass handed to me no questions asked. I think its unnacceptable that a car with a V6 should beat me like that regardless .. haha On the other hand I did Beat a stock Infiniti G35 by about 2 lengths.. still I think it should've been by much more??

I think I want to either turbocharge or supercharge my car however i'm stuck on deciding which would be better for me..
I've looked at websites where a turbo kit for a 99-04 model GT is $6,000+ (thats for the twin t kit) do they make a single turbo kit if so how much money am I looking at? Are they really THAT expensive??

I've looked at some superchargers and it seems I can get a pretty nice slightly used supercharger kit for under $1500.00..

How is the gas mileage affected with a supercharger vs. turbocharger on a bigger engine like this? I have some money but I dont think i could take filling up more than 3 times a week haha =)

Also, if I were to add a turbo or supercharger to my engine, would I have to add any other engine mods. to take the added pressure ??


I know these may be some slightly 'noob' questions but i'm new to this, im young, and i'm ready to start learning as much as I can. I love this website already.

Any help / link / advice would be muchly appreciated! Will post pics of her soon, she's a beauty.

[Drgnracin72]

ok first of all, welcome to the site!!! the nissan 350z will outrun a mustang even with the mods you have. the g35 shoudl too. and street racing is bad, keep it on the track!!! turbo charger are that expensive and look to spend about 2x what the pruchase price of the turboes was. they are hard to tune and harder to install. the turbo will make more power at the same boost level than the s/c will becasue the s/c take a slittle power to run it. s/c is the easiest way for cheap to make it go fast all the time. your engine will be able to handle the powert he s/c makes as long as you stick to 10 psi or lower. these 4.6 peter out at about 425-450 rwhp and will die eventually. the gas mielage may actually be improved from stock as long as you keep your foot out it, (which wont happen)!!!!!!!! whcihever you do make sure to get a good tune, on the dyno. and again welcoem and lets see some pics

[Invictus]

Nice.. Thanks a lot man.

I definately beat the G35, but the 350z.. I had him through 2nd gear, after that, I gave up.. Heh I don't think it was stock, I think his turbo kicked in.

It looks like i'm going with the S/C then to hopefully avoid any problems a turbo might cause me, plus that's a bit out of my price range.

Are you familiar enough with superchargers to recommend me any cost effective models? Would it be a bad idea to buy a slightly used one? I change my own oil thats about it, would it be impossible for me to install it myself haha..

I've been reading up on both of them.. I don't understand how a supercharger could INcrease gas mileage being that it's belt driven and always working (no lag). Anyways?

Yes, no work tomorrow.. i'll be taking some pics and definately posting them sometime tomorrw.

Thanks for the post-

[Invictus]

Also, can I expect around 400HP with just a supercharger?

Thanks again-

[Drgnracin72]

turbos will not hirt your motor at all. i like prochargers but some like paxton an vortech also. just stay away form powerdyne. s/c are fairly easy to instal and can be done ina weekend by someone who has a little bit of knowledge and the right tools. its pretty straighforward and simple. i run procharger on my car but will be elling it in a while to get something that will boost a lot more. i wouls say with just throwing on a s/c and with the mods you have, id say you might be somewhere around 375-380 rwhp. just jeep it at 8-10 psi and youll be fine. your car will haul ass even with just 375 rwjp

[Invictus]

How does the Polished Vortech V-2 SQ S-Trim supercharger look? I can get one with about 650 miles on it for around $1400. The max. boost pressure is 20 PSI , but since i'd be keeping mine at around 10 for my engine's sake would there be a more cost effective model for me? Or is 20PSI max boost common among all s/c's ?

375HP!! I can't wait... Hope my tires can keep up.

[99mustang232]

offtopic, but do you still have the old 3.8 motor and related parts?

[Drgnracin72]

thats a good buy!!youd have to spin your motor really hard to get that kinda psi form it but vortech makes a really good s/c. the only way youll ever need more than 10-12 psi is if you have built shortblock

[Invictus]

Looks like i'm going with that model then! Hopefully i'll purchase it in the next couple of weeks, now that I have my mind made up..

99mustang323 - No, I don't have the 3.8L engine or parts anymore. They were sold shortly after the swap.. Sorry!!

I just got my digital camera driver lodaded. The pics will be posted within the hour. They were taken today


Thanks for your help! If there's anything else I should know please do tell =)

[Invictus]

PICS ARE UP!!!

check profile!

[99mustang232]

damn your car has an idenity crisis?

[Drgnracin72]

lol

[Invictus]

Woops... HAHA totally forgot to black my plates out.. wasn't even thinking!

What do you guys think of the look??

Anyways,

I was getting off of the interstate just rolling to a stop, maybe lightly pumping the break.. But I had the clutch down and I was moving maybe 5MPH about to stop and I felt my power steering go dead.. I had the music up so I didn't hear my engine actually die.. But it died sure enough. It started right back up with no problem at all, no smoke or anything. And it happened again when I got home.. I think it may be a problem with my cold air intake.. My friend dropped a bolt where you put the oil in last week so I had to remove my valve cover (passenger side) to retrieve it.. I took the air intake off for room to work with. Ever since putting the intake back on it doesn't seem to be running quite right.. It seems to be on correctly so I can't tell if its sucking air improperly or whatever? Could the intake be the problem? Can you guys think of anything else? I crank it right back up with no problem at all and it runs fine.. There's no sputtering or shaking before it dies .. it just starts rolling to a stop. I don't even know it dies sometimes..

Any ideas?

[Casper98GT]

the nissan 350z will outrun a mustang even with the mods you have. the g35 shoudl too

Thats the saddest piece of information i have ever read in my entire life. I have run multiple 350z's at the track and crushed them. Im a stock NON-PI 98 GT. I am making 220 RWHP. Give me a break, i can pull a car on them no questions asked on the street. The most modded 350 i have run was a CAI, exhaust and short throw. And i still beat it.

So please dont ever say that again.

[Casper98GT]

But it died sure enough

Mustang have a well known problem with the IAC's. Youre car is older and i will bet this is the problem. Could very well be that you have a vaccum leak after remove
ing the CAI and putting back on. Check it over again, and if not..... repalce youre IAC.

[Drgnracin72]

mmust be a shitty driver?

[Invictus]

My engine only has 24,000 miles on it.. The air control is supposed to be reliable through over 80k shouldn't it? I ran the hell out of it all last night and I couldn't get it to happen again, everything seems to be fine right now. But if it does happen again i'll definately take it off and clean it. Thanks for the advice though!

As for the 350z.. Yes, there's no way it was stock, i'm 99% sure it has a turbo because all I could hear was the hissing as it blew by me. I felt like I would've won though had it not because right off the line i jumped about 2 lengths on him and thats a lot of making up to do! I still hate that I got beat by a v6 : ) No matter how light or expensive they are

[Casper98GT]

mmust be a shitty driver?

Nope, they are just pieces of crap. thats all. I have driven them and im not impressed. I do enjoy the cornering and braking they have.... thats all. If they inteneded for it to be a contender with us, they would have stuffed a stock turbo or a titan motor in it.

A Stock PI Mustang and a lightly modded Non-pi Mustang can take one end of story.

My engine only has 24,000 miles on it

I forgot you had a 03 motor.

[Invictus]

What is a PI mustang? I'm looking for anything that'll give me a large performance increase without spending a huge pile of money... If I got this would I get any noticeable performace increase on the 2003GT motor? What else what I need

[Casper98GT]

Hey man. I noticed you just IM'd me a while ago... i was napping. Sorry.

I just tried to IM you back , but you never responded.

Ok.... 1996 - 1998 Mustang 4.6's were known as a Non- Performance Improved. ie: Non- PI

1999-2004 They were PI (performance Improved )

What is basically is they found out they could only make 215 ( 225 for 98 gt's ) Due to a VERY restrictive Intake Manifold ( not to mention it leaked... alot ) and the cams were slightly lower lift. The heads were also restrictive.

So the PI design, made a very good flowing intake, heads, and cams. So if you want to go PI from a Non-PI motor is very simple.

you have a PI motor and cant get any better.... you can however..... work youre heads, do a Bullit intake ( or another ) and stage 1-2 cams.