The difference between those motors is much more than just a chip.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

Like ryoken stated, the difference between those engines is much much much more than just a chip or a simple engine redesign. But dspisak, if you want to play that game...

1992 Maxima, VG30DE 160hp
1995-99 Maxima, VQ30DE 190hp
2000 Maxima, VQ30DE ~220hp (I think 2001 AE had 222hp)
2002 Maxima, VQ35DE ~260hp

See my point? You haven't shown us anything new. New model years yield new engine reworkings, bla bla bla.

I'm not trying to make this into an argument, but I've been around cars long enough to know that ignition tuning, tuning of all the other little variables that are controlled by an ECU cannot produce 70hp-crank on an N/A motor with a simple chip change. If you want to put internal work into that, sure I give you that, it's possible with some headwork and lightweight internals.But if a single chip or new ECU could do that, who would pay for Stillen SuperChargers that produce somewhre around 80hp for $4k?

You have to be serious here, it's ok to be wrong, no one will put you down.


CB 5AT - SAC, CA

 

I did not know we were playing games. I thought we, as G35 enthusiasts, were having a friendly discussion.

I am so sorry that you missed the point: peak HP increased as the RPM limit increased. So what if there have been engine modifications. I don't think that engine modifications alone would cause the RPM peak rise. I believe there is "room" for more HP due to changes in engine management.

There is not one person in this forum (unless it is a Nissan affiliated engineer lurking here) that knows Nissan's design specifications and parameters of the VQ35 family of engines. My impression is that most of the technical discussions herein are lively, spirited, but friendly, speculation.

However, I like your philosophy. Mozy, it is OK to be wrong.

<font color=blue>Dan</font color=blue>

 

So would you say that you want a higher RPM limit for the VQ? And would you say that you think it will increase HP?


You're right about speculation, but some of this speculation is educated reasoning, earned from experience.


CB 5AT - SAC, CA

 

just for the record the modern m3 motor is totally different from our e36 m3
its pretty much pushed to its limit, ask a bmw tuner how hard it is to get power form an m3 motor and theyll wheep.
our e36 m3 was pretty much a 328, in europe they had the real motor that also exceeded 300hp.

food for though

-moooooo

 

Yes, the usual way to increase HP for a NA engine of a given displacement is to increase the RPMs. However, revs alone will not accomplish this. The engine has to be able to develop a high BMEP at the higher revs. This is where proper engine management comes in, in addition to a good intake/exhaust tract design.

You live in Sacto, I live near Walnut Creek. Let's meet half-way, say Fairfield (Fairfield Infiniti?) and have a pleasant chat about motor design, etc. How about this Saturday, early before the temperature gets cranked-up?

<font color=blue>Dan</font color=blue>

 

I did not pay too much attention to BMWs until the wife got hers. They do seem to have changed engine designs several times recently. I seem to recall (from C&D or R&T articles) that the US spec. M3, through 1999, was detuned to met emissions limits. I understood the new version, 2001 onward, had essentially the same motor but the engine management system was changed to allow more HP and meet emissions. So, the increase was due to a different motor? I didn't know that. That speaks well for BMWs committment to high performance.

I gather from visiting several BMW related websites that the M3's big ends are sensitive to oil viscosity. The only recommended oil is BMW 10W-60 (made by Castrol?). The engine does seem to be on the limit. Thank you for the information.

<font color=blue>Dan</font color=blue>

 

Haha, nah, I can't meet, I gotta work on Sat.

I see you're not just one of those people who blabs on and on about something they don't understand, so I give you that. I won't argue with you anymore [img]/w3timages/icons/smile.gif[/img]

But just to jerk your chain for a second, whats the point in increasing RPMs for the VQ when most of the tourque is between 3,000 and 6,000 rpms anyway? A 9k rpm increase won't do much?


CB 5AT - SAC, CA

 

Too bad about Saturday. Maybe we can meet when there is a Sacto or East Bay meet.

The standard VQ has a good torque curve. The trick would be to maintain high torque at the higher revs. As an example if the standard engine develops 228 ft-lbs at 6,000 RPM the HP will be 260. If the modified engine can develop 228 ft-lbs at 7,600 RPM the HP will be 330.

<font color=blue>Dan</font color=blue>

 

Got a chip put in my car over the weekend. It added over 72 HP. this thing is sweet. I paid 1100.00 for them to retune my ECU and dyno it and make sure all the fuel mappings were correct and that teh system shifted normally.





























j/k. Im sorry but no chip is gonna give you that much power. LOL

 

No chip on an NA car, anyway. It is possible with a factory turbo setup. [img]/w3timages/icons/smile.gif[/img]

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

 

Maybe it's the MAGIC CHIP~
just like a magic stickkkk....ekekke

 

70hp is a little bit unrealistic for just a chip. By the way where is this "thisisjohnny" guy after he made the post? Yes, it is possible to get 70 extra horses with a NA engine, but not just from one single chip. Ignition timing, fuel adjustments and the rev limiter can be adjusted with an ECU, but results will be minimal without working the internals. To make changes to the ECU would also require making modifications to other areas to compensate for the alteration. I wouldn't install a $10k sound system for a customer and give them 8 gauge wires............there needs to be a balance.

This is one thing many don't understand. Why else would tuners go with forced induction vs. NA? That's bc it's much easier to produce big hp numbers. To get 70 horses on the VQ would likely cost $10k-$15k with labor. Forced induction would cost about $10k - $15k and could up the horses by 45% with internal modifications (camshafts, pulleys, turbo manifold, fc, pistons, etc.).

Chips made for turbo cars adjusts the boost level, which then automatically creates more power. I have the Garrett chip on my 2002 A4, which produces some 50 more horses and costed $500.

In all likelihood, an aftermarket chip for the G35 would cost approximately $1000 and bring the hp up by about 10.

Here's what I have planned for my car along with prices (estimates since some of these parts are still under development):

-Veilside Throttle Body (100mm): $900
-Fujitsubo Tittanium Exhaust: $1700
-Top Secret Titanium Exhaust Manifold: $2500
-Veilside Titanium Y Pipe: $700
-Blitz Intake: $250

These quality items probably net me about 20-25 horses and lightened up my car almost 100 lbs. at the cost of $6050.........a fuel controller would bring in about 10 more horses at about $1700 + dyno time (AFR adjustments costing about $200 per hr).

Going NA is expensive especially when you're dealing with quality parts, but at the same time you won't have to deal with the headaches of an aftermarket turbo.

 

I heard about the chip too im out in So Cali. im waiting for it too but i know there is more than 1 chip out for it now. check with Nismo i think......