Need More Power From Vq25Dd

[Howaitonaito]

Sweet as because I could not find one specifically for the 2.5V6. I found a injen one from the US for the V6 where they only got the 3.5 in 3 power tunes and was curious if it would fit

[PN-Mad]

My vq30dd came with a pod filter, why the hate?

Nissan factory airboxs are actually very good. In fact your airbox has flowed 300awkw on a Stagea. Thats with the front panel open. Pod filters are great at sucking in hot air from the engine bay (thus reducing power), generally reducing filtration, and being defectable if not enclosed by the Po po. They add noise but no power.

[Howaitonaito]

Yeah I got told to avoid pod filters. Do you think an air intake for a 3.5 will fit a 2.5?

[PN-Mad]

As I said before....

I have only looked at google images of the VQ25dd.I can't see any reason why a z-tube, wouldn't fit. have a search and look at one.

Make your own "powerduct" or buy one from a sucker thats got a pod filter on a VQ35de, and get a quality panel filter. Intake done. Its not going to get any better than that.

OR

hold off modifying it, wait 1 year, and go buy a turbo car thats easier to mod. I can't see how you'd turbo a DD motor. Its very different to a VQ35de. Just wait, buy a 350z and then go nuts.

[Kolossus]

if you heat shield the pod should be fine ( i haven't personally got around to doing mine yet) and in QLD i'm pretty sure the box rule isn't a issue

[sonicii]

hold off modifying it, wait 1 year, and go buy a turbo car thats easier to mod. I can't see how you'd turbo a DD motor. Its very different to a VQ35de. Just wait, buy a 350z and then go nuts.

I can't see why turbo charging a DD motor would be the different. Finding higher capacity DD injectors might be the only hurdle, assuming the factory injectors can't keep up.

[zei20l]

there are DD turbo motors out there already. from memory VWs 147TSI motor is DD and the 125TDI is DiD

capacity would be the limiting factor.....

[PN-Mad]

It wasn't the fact direct injection and turbo hadnt been done but the vq25dd issues.

Yeah, we'll I'm glad I'm not doing it. Problems off the top of my head would be the dd injectors, the fact it's either 11:1 or 11.3:1 compression, plus the Strength of the connecting rods, and engine management.

I guess it's one of those things, if you throw enough money at it, it would probably work, but it's really not a cost effective project. Far better to ditch it when on full licence and get something easier.

[zei20l]

yeah i agree on all those points!

either wait and get a VQ25DET motor installed (and i rekon youll have a monster) or upgrade later when you can afford to

its easier learning to hone your driving skills on a lower powered car. then upgrade when you can drive better.

[Commsman]

its easier learning to hone your driving skills on a lower powered car. then upgrade when you can drive better.

Whoa, Iain, is that a can of worms I hear you opening, lol. Although most likely true, I can think of a heap of teenagers/early twenties guys (& gals??) who could drive better than me - on a race track anyway, where there's no worry of a lost licence. Although I might be a better (safer) driver now then when I was 18-20, I certainly don't have the nads for risk taking like I used to.

[zei20l]

unless he has been driving for years in gokarts or something - no offence intended - then he isnt 'as good' as driver as some others and still may require the experience (and possibly patience) required on the road.

i still take risks, but i use experience before i attempt anything stupid

[Commsman]

unless he has been driving for years in gokarts or something - no offence intended - then he isnt 'as good' as driver as some others and still may require the experience (and possibly patience) required on the road.

i still take risks, but i use experience before i attempt anything stupid

I totally agree. There was the generalisation, which is normally true btw, that young = not a good driver. I wanted to extinguish the flames before they took hold .

[zei20l]

sometimes there are still flames with my car hahaha

[Howaitonaito]

Pod filters are the biggest waste of time!! They suck on hot air and do nothing!!

The plans are:

-Exhaust.

-Port and polish.

-Cold air intake.

-ECU.

-Good tune.

And see what power I get from that. Saving for a M35 axis stagea

[zei20l]

replacing that intake pipe on the NA engines is worthwhile, as is the plenum spacer.

a port and polish? you realise that means the motor has to come apart?

probably not worth it unless you throw in some cams too

[Howaitonaito]

Yes I do realize this. Willing to throw in the $$$$$$

[zei20l]

ok thats all fine, but why?

if you have the money to throw at it, save it and do it properly later on with a motor that will respond to the mods better

[Howaitonaito]

Seeing how much I can get from a 2.5. Saving the real mods for the stagea/350GT coupe.

[Howaitonaito]

And because it's my car and my money and I can do want I damn well want to it

[PN-Mad]

Don't worry about Iain...

Hes all:

I think you should go for it... Bridge porting or peripheral porting makes the powwwaaaahhh.... Brap Brap Brap!

Please post dyno results.