Upgrade Turbo But Not Too Crazy

[xm4tr1x]

Hey guys not sure which turbo will suit price/power/stealth

im after a turbo which is undetectable by cops, has more power than stock and isnt too expensive and has minimal turbo lag.

ive been looking at this hyergear g1 400hp rated turbo, its a direct bolt on for rb25 and its $1250 i have a jjr split pipe coming too so i wanna hit it all in one go.

rpm range for boost is 1500-3600 rated 20psi

link : http://digi-hardware.com/atr43.html

can i have this turbo on running 8psi like what my current turbo is running now and should it be fine? or do i need pfc with it?

current mods :

- 3.5 cat back

- return flow FMIC

- HD clutch

- BMC panel filter

the final power figure im aiming for eventually is whatever the injectors can throw out safely so 220? with 80% or 90% duty? not a gun on this part.

Thankyou in advance!

[Bsa]

why upgrade turbo and not get a tune its pointless really. also iv never fitted a turbo that just bolts up becides a stock one

[Super Drager]

Mate go for a Highflow, not worth putting on an ATR43 for 220rwkw.

[GTSBoy]

Absolutely agree with the above. Hypergear's hiflow of your existing turbo will be the closest thing to your stealth requirement and cost less than the ATR43. But don't upgrade your turbo if you're not going to upgrade everything else. At minimum you want Nistune, fuel pump, intercooler and 14 psi, + turbo upgrade or you are wasting your time. And that's just to take you to the limits of your stock injectors. Time for you to read a few sticky threads I think.

[xm4tr1x]

Sorry forgot to mention the main reason for this post, my turbo is making loud noise like a sander on a piece of perpex. it gets louder and more noticeable as it pass 2-3 mins of consistent WOT.

under normal driving conditions there no unusual audible sound.

thanks guys.

so best option is to get my turbo high flowed? what will the power rating be with bigger wheels on it? turbo lag etc?

[JustinP]

2 to 3 minutes of consistent WOT... Where are you driving that thing, across seven airport runways in a row?!

Sorry forgot to mention the main reason for this post, my turbo is making loud noise like a sander on a piece of perpex. it gets louder and more noticeable as it pass 2-3 mins of consistent WOT.

under normal driving conditions there no unusual audible sound.

thanks guys.

so best option is to get my turbo high flowed? what will the power rating be with bigger wheels on it? turbo lag etc?

[GTScotT]

The standard hypergear highflow is $960 from memory, it should do up to 240kw

It will be the closest thing to a bolt on and 99%% undetectable (close as ull get)

[wolverine]

Or you could look for a exhaust manifold/turbo leak before spending money on replacing parts that are probably not broken.

x2 on where you hold WOT for 2-3minutes??? Are you a test driver for Bugatti?

[GTScotT]

im on wot for weeks at a time, lets let that one go shall we... hes the stig, leave it be

[Bsa]

Sorry forgot to mention the main reason for this post, my turbo is making loud noise like a sander on a piece of perpex. it gets louder and more noticeable as it pass 2-3 mins of consistent WOT.

Where is this place I want a go

[SS8_Gohan]

i had this high pitched noise on my old GTT, thought it was poss the turbo but in the end it was the FMIC which had a slight leak around one of the silicone joiners. So i just pulled it all apart and put it all back together making 200% sure all was nice and snug, and got some good clamps and ditched the ones it came with. Norma ones i think?

i had a highflow hypergear on my GTT as well, nice bit of kit. Stealth, punchy and plenty of fun in a rwd Skyline. 250rwkw ish on 98. 280'ish on E85.

But like the others, no point getting the turbo, dump etc without getting something to tune it. As you have a R33, you're better off getting a power fc i reckon.

[xm4tr1x]

no doubt ill be gettin a pfc just wondering if i should rebuild my one or be looking at something else. whats the differences between a rebuilt highflowed r33 turbo compared to a hypergear g1 turbo in regards to power/response/ boost/cost etc.

[GTSBoy]

Not drastically different. Why don't you go look at the Hypergear site yourself and check out the graphs?

[Tony de Wonderful]

2 to 3 minutes of consistent WOT... Where are you driving that thing, across seven airport runways in a row?!

He was actually driving an R32 with an RB20 in 3rd gear and at 3,000 RPM. It was slightly uphill.

[Ad's]

Like others have said you will need to upgrade more if you are changing the turbo, seems a waste to upgrade the turbo and only get 1/10th of the upgrade it can offer. This is what id be doing

Fuel pump

Some sort of injectors if not an adjustable reg

3 inch dump

Aftermarket computer. Weather it be a nistune or power fc

Maybe a EBC

Z32 afm

Turbo

Tune

But doing all of that if a cop sees something he does't like he will defect you, so really if you went for a garrett a trubo is going to be the least of your worries as he will probally get you for to low etc.

[JustinP]

He was actually driving an R32 with an RB20 in 3rd gear and at 3,000 RPM. It was slightly uphill.

[xm4tr1x]

sweet guys thanx for all ur help. Im gonna just drive it around like a granny till i save up for a hypergear highflow, pfc, injectors, fuel pump, 3" turbo back, ebc, z32 afm or map sensor. and a sexy tune!

sex!

thanks again guys.

[Josh_TypeX]

Or you could change the $20 turbo to dump pipe gasket that is most likely the issue while you save for those parts...

[xm4tr1x]

well i got a JJR split 3" dump coming in the nxt week so ill see if that fixes the prob. Cheers.

[gtsttrk]

-split dump

-venom hi-flow cat

Get those done first.

What sort of CAI are you running? If you haven't already upgraded that yet do that before you go altering the turbo. Even if it is just a good panel filter in the stock box.