Vg30 Gcg Hi Flow Or Gtrs On Mild Modded Gts25t ?

[chiksluvit]

just an update on the GCG hiflow with OP6 rear housing

I had to get a boost leak sorted (repositioned cooler piping and tightened a hose clamp), base timing reset to 15 (mechanic didn't do this properly when i got a major service) and ECU tuned by Toshi, who did a great job!

OP6 GCG hiflow wasn't as laggy as I thought it was, it was surprisingly linear, less lag than GT2540, you can see positive pressure from just over 2000rpm and full 17psi from 4000rpm

it doesn't have the midrange rush like the R33 GCG high flow, but provided a very linear delivery with strong top end, which i think is great for track, whereas the r33 GCG hiflow will be good for street.

don't know what the max power figure is though, as the tune is done on the road, one thing Toshi did mention is that he thinks it drives simillar to hypergear OP6 highflow

for the price of $2000 new, complete bolt on ball bearing unit, i think it is good value for money

Edited December 8, 2010 by chiksluvit

[SoFreshSoClean]

Question , is a 96 build GTS25T with a genuine 91K a rare beast nowdays ?

I have a 96 GTS25T with 95k

I also have a GTRS turbo. I make 252rwkw @ 15psi. There's probably more in it, but as my tuner said, the power was 'there' without leaning on the motor too hard so why push my luck!

As for how it drives on the street, its kind of deceptive.. sometimes it doesn't 'feel' like you are going fast, but looking at the speedo its obvious that it isnt true. Also, I can't speak for anyone else's car, but I have pretty good tyres and unless its provoked my car just digs in, grips and rips through 1st and 2nd.

EDIT: Forgot to add, that my car passed over the pits with a GT-RS 8)

Edited December 8, 2010 by SoFreshSoClean

[chiksluvit]

went for a drive with andymoocow today, and i must say that the GTRS' response is noticeably better than the OP6 hiflow

both turbos are quite linear, yet GTRS feels like it has a fatter torque curve throughout the rev range

the OP6 GCG has that second of lag on downshift acceleration, with GTRS, this is almost unnoticeable.

my boost is limited to 16psi with AVCR and still standard actuator, whereas andymoocow's GTRS is running 18 psi, this may affect the overall performance. But overall you get what you pay for.

[andymoocow]

was good fun going for a spin in your car too mate, good to feel the old GCG again, ahhh good memories

I do love the GT-RS turbo still, and will most likely bolt another one on when this one comes to the end of its life. Sure there are PLENTY of other turbos out there with more power, but response is what i love when driving sydney roads, which are almost all 50km/hr near me.

[PM-R33]

Yeah the on and off throttle of the GT-RS is something you fall in love with on medium speed/twisty roads.