I know some of the VQ30 engines had 190 hp and I know mine has 227 hp. What other HP ratings have they had over the years (stock)? Are any stock VQ30DE engines rated higher than 227? What changes were made to increase the stock HP, intake manifold? air intake? In other words what is different between my engine and a 190 hp engine?

 

There is also a 222hp rating for the SE/GXE/GLE 5th gen Max. The I30 and the AE Max were rated at 227.

I think the major difference between the 190 and the 222 is the dual intake runners on the 222. Then, theoretically, there is this magical difference in the exhaust system your I30 and my AE has which give us an additional 5hp. Most of the past three years on the org have forced us to accept the liklihood that these 5hp do not really exist and that Nissan is just screwing with us.

 

I noticed U mention having a M5 rear spoiler on your MAX, do you have a picture of it ? I hate the stock wing, why mine has no wing.

 

The 5hp on the I30 and AE are supposedly from a dual capacity muffler. A little door opens a lower restriction path when at high RPMs. So you can get low RPM backpressure for troque, and high RPM HP.

Wheather it works or not???

 

The variable capacity muffler is on ALL 5th gens not just AE/I30s. The ECU is different and initial testing has shown the software operates different, ie SE vs AE.

The "variable capacity muffler" flap is a gimmick IMO, since all it really does is allow quiter operation below 2000rpm and then once the flap opens, it's just a regular absorbtion type muffler...no more...no less.

I'd erase the backpressure comment quick...you don't want to open that can of worms.

 

what?!...there is a different ECU between the SE and AE?

 

Yes, different part numbers is the first clue, but I believe there is more.

However, once you get the TS ECU, you'll have the AE+TS software.

 

Hmmm... I didnt know that.

What is wrong with the backpressure comment. I would explain my understanding, but lll just take your advice and not open that up... Unless someone else does

 

So the 2003 Maxima there still used the VQ30 and not the VQ35 like here in North America?

 

the ae also has a different part number for the b pipe. only thing different about the muffler is the tips, its the same muffler.

 

The ECU for the I35 and the Maxima is different. When I had a maxima, the master tech flashed my ecu with the infiniti's. Felt the exact same to me. and yeah the part number for the exhaust is different for the AE.

 

4th gen maximas the stock HP rating for the VQ30 was 190

pre VQ35, the VQ30 in '00-'01 5th gens had the variable intake installed, and as someone mentioned a dual intake runner was used, the 227HP AE used a variable capacity muffler for an extra 5 HP

there are ways you can get a VQ30 to produce more than 227HP but those are called mods, in the form of super or turbo chargers, high-flow exhausts, B & Y pipes, etc..

Mack Daddy: in the UAE how much HP does the VQ30 there produce in stock form?

 

Stock VQ30 here is 227 hp.
In this country even the 2004 Mzx has the VQ30.
HEre is a pic of my rear spoiler as well.
The reason I asked this HP question is that I have raced 3 different 4th generation Maxs and although I might have just beat them by a nose they definately aren't any slower. Did the 4th gen max ever have the 222hp engine? Maybe the 4th gens can hang because my 5th gen is heavier. ANyway 4th gens are fast.

 

alot of it has to do with hp/tq in relation to weight. A 4th gen A32 can weigh a mere 2900 lbs in comparison to a A33 body of 3200 lbs.

at a dynojet meet this past weekend, a 1997 4th gen just put down 194 whp to the wheels with a variable intake manifold and bolts ons. Given his power to weight ratio, he could easily take alot of cars on this board.

 

Where are you from?

Some 4th gens have the MEVI in certain countries, however the weight difference is most likely why. I'd assume the I30(your Maxima) chasis is even heavier. Any idea what your car weighs?

 

my car wieghs 1390 kg. or just under 3100 pounds.

 

From what I can find on the web...
95-99 4th gen max ~3001lbs.
2000-2001 5th gen max ~3186lbs.
2000+ I30 ~3342lbs.

So, ~340lbs+stereo will make a difference in 0-60, 1/4-mile, but after that you'll walk away as long as he doesn't have a MEVI.

 

mine is not as heavy as that. YEs I have a stereo but remember mine is not an i30. I have cloth seats, five speed manual tranny, no airbags, no abs, 15" steel wheels. It is pretty bare bones. I checked the specs already. IF I got the GV with leather and auto and the stock big stereo and the 5 or 6 airbags with the ABS then it would weigh more.

 

My only other guess is that maybe your VIAS is broken, since with your weight and 15" wheels, you should be faster.

 

[QUOTE=Wht98SE]4th gen maximas the stock HP rating for the VQ30 was 190

pre VQ35, the VQ30 in '00-'01 5th gens had the variable intake installed, and as someone mentioned a dual intake runner was used, the 227HP AE used a variable capacity muffler for an extra 5 HP

QUOTE]


as was stated before...all 5th gens have the same muffler with that flap.

 

Sorry what is VIAS. I don't have any form of traction control either or electric seats.

 

variable intake air system (VIAS)

its contains a butterfly valve inside your black intake manifold which activates at high rpms affecting the resonance of air entering your combustion chamber for better breathing.