Intake Plenum (r33)

[Kaido_RR]

thanks steve im getting a pfc with the plenum and fmic so i will get it tune up when it all comes

[B-Man]

VG20 ?? Why don't you get a better turbo ? You a prolly blowing heaps of hot air - and by raising the boost makes it worse.

Sure you can cool the air with an intercooler - but wouldn't it be better to not let the air get so hot in the first place ?

Cheers,

[fresh]

is that running unusually lean, or is it just me ???

[Ronin 09]

there is a host of other factory nissan bits from various nissan cars that you need to install the Greddy. The manual that comes with the intake plenum gives you all the part numbers. A nissan dealer should be able to hook you up.

[Sydneykid]

My 20 cents worth, richen it up NOW. Don't wait to buy some parts, 13 to 1 A/F ratio is more than I would consider running for 1 day. You don't need a FMIC or a plenum to fix lean A/F ratios. But if you don't fix the A/F ratios you are going to need a new engine, maybe tomorrow or maybe the next day. :Bang:

[Kaido_RR]

ok sydneykid so wat u are saying is my engine is running to lean and isnt getting enough fuel and will die very soon?

wat about the blue line on the dyno graph (my 1st run which was 0.4bar) is that ok for daily uses?

[N I B]

Fix ASAP

[BBQ]

Have you checked your Plugs and Coil Packs ? Looks very similar to a r33 gts-t we run up on the dyno with a couple of coils a little dodgy.

And yes invest in a bigger fuel pump they are a man’s best friend when you own a skyline.

Other wise you will be singing the song .. number 6 da da…… I melted piston number…. 6 da da…

[sweetr33]

hehe, seems a little strange, im with everyone else, lean is no good, buy bigger pump, fresh plugsa, colder heat range of plugs, reset ur ecu after doing so and see how u go matey. goodluck

[aybee]

dont waste your money on a plenum cause you dont need it right now.

save the money for a rebuild when your engine dies.

[Kaido_RR]

question why will my engine die?

Im looking at the dyno graph and it only starts to go shit when im running 0.6bar at 5000rpm in 4th gear. i never hit that on the street so why should it die?

PLus i run 90% of the time stock boost lvl

[aybee]

why dont you just fix the problem rather than avoiding it?

and by that i mean a proper tune, not a modification that wont help

[Kaido_RR]

lets see a proper tune, would mean i need a safc or pfc

and im playing on getting a pfc with the plenum and fmic so i dont see how i am avoiding it, its not like i have the money to spend and jsut dont want too

[rs73]

13_devil,

Doesnt mean that if it only happens at 5000rpm it will not destroy ur engine in the long run.

I believe the problem doesn't just occur suddenly at 5000rpm but it may build up slowly until it's noticeable enough at 5000rpm to show up on dyno graph. so it could start to happen at a lower severity (hardly noticeable) at 2000, 3000, 4000 rpm. keep running it over and over and after a while it can just go bang at the time u least expected. After a while the problem may shifted to 4000rpm at 4th gear, then as it goes worse it can be at 3rd gear 3000rpm until the whole engine seized.

I'd say get it fixed dun ignore it. See my dyno graph below right when still having same pinging problem with yours, and below left after I fixed it (my fuel pump not supplying enough pressure). It only happens last yr at 5500rpm and raised boost, this year it happens at stock boost as low as 3000rpm engine start pinging cos leaning out. Lucky i fixed it and compression test shows engine is still healty (was running stock boost over 1 yr since 1st problem detected).

Cheers,

rs

Edit: stupid attachment, the one i attached first turns out to be on the right.

[sweetr33]

a/f ratio is rather stable on the power run. nice. well i think its been decided, first things first is get urself a decent fuel pump b4 anything else

[DezertEagle]

I'm speaking from personal experience.

My car used to ping at anything around or above 4000rpm, some days it would, some days it wouldn't.

Being the stubborn and over enthusiastic child I was, I kept going, pushing it and driving it with the "she'll be right mate" attitude.

One day it started blowing smoke, then abit more, then abit more - till the motor died!

And guess what? This was a STOCK engine! Except for a Cat Back Exhaust and guess what else? Front Mount Intercooler (800 x 300)

What I suggest to you, check your injectors or get them cleaned straight away, check the timing, it may seem it's not touched but a careless belt change may have knocked it out.

I have a new engine now (RB25DET) and with Full Turbo Back Exhaust and Front Mount Intercooler I have not heard one ping whatsoever.

[MetBlue_GTST]

Relating to the main question being asked... IMO a plenum is a good move for a few reasons (even with standard turbo)... But the main ones is that it reduces the piping and the next is the throttle response... Made an enormous difference on my car...

my 2 cents...

[Sydneykid]

Relating to the main question being asked... IMO a plenum is a good move for a few reasons (even with standard turbo)... But the main ones is that it reduces the piping and the next is the throttle response...  Made an enormous difference on my car...

my 2 cents...  

If I spent $1,500 on a turbo upgrade and you spend $1,500 on an inlet plenum I'll bet my car is faster.

[Kaido_RR]

thanks everyone for the reply

Im going to get myself a powerfc, at the end on the month; get it tune up and hopfully that will fix the problem

The car just got its major serives, so everyone is ok (as injections, plugs, timing belt, timing etc)

but yeah im running only stock boost at the moment and no pushing the car hard so im hoping it will last for a month

[MetBlue_GTST]

If I spent $1,500 on a turbo upgrade and you spend $1,500 on an inlet plenum I'll bet my car is faster.

Ahhh very true... But if you have both then life is sweet...