Supercharger/Turbo question

[Gman8990]

I am thinking about adding a supercharger to my maxima... its a 4th gen... im looking at 2 diff kinds, 1 will give me 2-3 psi more than usual and another will save me 30% fuel economy and give me 10% hp... which one? an also... this summer i am thinking about replacing my 3.0 L V6 with a 3.5 out of a newer model... is that possible?

thanks guys

[MTZI30]

Yes i beleive you can put a vq35 in your car. Try a search im almost sure someone here has done it. As for the boost...that is a huge upgrade. Not only will you need the SC parts but you'll need the supporting cast. Im not really sure how much boost these things can take stock but im guessing youll need to beef up the transmission and bigger brakes/suspension work would be a good idea.

[kzoosho]

I am thinking about adding a supercharger to my maxima... its a 4th gen... im looking at 2 diff kinds, 1 will give me 2-3 psi more than usual and another will save me 30% fuel economy and give me 10% hp... which one? an also... this summer i am thinking about replacing my 3.0 L V6 with a 3.5 out of a newer model... is that possible?

thanks guys

3.5 has been done many times. As far as boost what are you looking at. I have a turbo and a super car so i cacn help you either way .And gas is going to decrease not increase just to let you know.

[Sentientbydesign]

In the future. Stick to one thread.

Posting the same question multiple times will put you on the list.

Also, post more details. 2-3 psi more than normal doesn't mean anything. NORMALLY, our cars are NA. So does that mean that this S/C will give you 2-3 psi? I doubt that.

The likelihood is that you'll burn through more gas going super or turboed. Not because it's less fuel efficient, but because you'll be more apt to using the power you have.

I can almost guarantee that your transmission won't hold a VQ35DE on boost. You're looking at over 300hp to the Crank and the transmission was only supposed to deal with 190hp. So look into beefing up the transmission or swapping one from a newer gen.

[Gman8990]

thanks sentient... and sorry for the repeat... the other is a little more in depth on the engine part

[kzoosho]

As far as transmission goes you will be fine man. Im running close to 400 at the wheels thru a stock 2001 transmission.

[Sentientbydesign]

As far as transmission goes you will be fine man. Im running close to 400 at the wheels thru a stock 2001 transmission.

But he'll have an older 4th gen transmission?

[Gman8990]

yah but i wont have quite 400... more like 320 ish

[kzoosho]

Its been done th

But he'll have an older 4th gen transmission?

ru 4th gen trannies time and time agan. Hell i know someone that put 470hp/500ftlb threw a 4th gen transmission. He also tracked the car.

[mtcookson]

And gas is going to decrease not increase just to let you know.

This isn't always true, especially if going to a turbo or s/c system from a stock setup. Basically, all of the performance parts you're putting on the engine actually make the engine more efficient. Now, you can actually make the engine more or less efficient at certain points in the RPM. If the modifications make the engine more efficient all throughout the rev range its very likely you'll get better fuel economy.

What a lot of people don't understand is that even if you're making 200 hp or 500 hp... that's not what you're putting down when you're cruising. You're making very little power while cruising and basically, the more efficient you make everything the less power needed to sustain cruising speed and that is where you can get better fuel economy.

[Sentientbydesign]

That's great in theory, but in reality, I haven't heard of any stock to turbo conversions that have lead to increased efficiency.

I will admit that if done "right" efficiency can be gained, but if your cruising RPM is low enough to not create boost, then essentially you've made the exhaust/intake system less efficient by creating some back pressure and restrictions on the intake side.

Explain to me how the rule of thumb on the G35 transmission is to stay under 400hp, but at 4th gen Maxima transmission can handle 500

I sincerely doubt that a sedan transmission was built to handle more torque than a sports coupe.

[mtcookson]

Its simply driving habits. Most people going to a turbo or s/c setup will tend to drive in boost quite often making it less efficient.

I turbocharged my Maxima a while back. I wasn't making a whole lot of power but it was a lot more than stock (160 bhp vs. about 215 whp) since I was using a small turbo on a very poor tune. On top of having a poor tune and a terrible intake and exhaust setup I still managed 29.4 mpg on the highway. With a better intake and exhaust and some tuning it would have easily been over 30 mpg oh the highway, better than stock.

In town though... that was another story. I couldn't keep my foot off the throttle in town so I got about 14 mpg, definitely much worse than stock.

[kzoosho]

Not said it was built to handle it but it does .

[blackmax23]

The STS remote-mounted turbo system for the corvettes will give you 2-3 mpg more over stock. It can be done, and yes you're right, it's all about efficiency. GMan, I just hope you're prepared for what it really takes to supercharge/turbocharge the max, or any car for that matter. Not only do you have to super upgrade all fuel delivery and cooling systems, but you must think about how you're getting that to the ground. We've beaten the transmission issue into the ground yes, but you gotta think about your axles handling the horsepower too. Also, think about engine mounts, you'll be getting gobs of wheel hop if you're not careful. I just hope you're prepared for how much time and $$ it'll take to be a reliable sc/tc car. After install, tune, suspension, axle, etc. mods, you're talking well over 10 g's.