My last dyno session was interesting, but then again it wasnt...
Interesting that we realised the coil was pretty well dead, and after changing it to another coil it was much better, and sounded very nice.
But not so interesting was the fact that the old girl was only making around 170hp at the rear wheels on 12psi. Basically i'm not sure if my turbo is too small, but then again its a 460hp turbo, so i'm abit puzzled why i'm not getting more HP.
I've been told the engine simply cant make too much HP because of the plenum and intake runners, but after reading afew of the posts you guys have written, that isnt so much the case...
Yeah i've said i was going to enlarge rear exhaust housing to an 0.86 from the current 0.64, so i'll have more mid-range to top end grunt, but with the current setup boost comes on very quick and strong down low which is what i originally wanted.
Can anyone tell me if they think the turbo is too small..?
Next dyno session will run 15-16psi and see what that produces..but basically i'm expecting, or was expecting around 250hp at the wheels without much fuss. I thought with a 460hp turbo that it shouldnt be a problem. If i wanted 180-200hp at the wheels, i simply would have gone with a n/a 24v and be done with it.
Also my brother, which in the past he has done alot of drag racing, said the standard cams may be restricting..? Where me personally i've always thought standard cams are just fine, for its the turbo that makes all the power..?
Basically i was expecting more. Changing intake runners and plenum will be expensive, for injectors would have to be changed, etc.
Does anyone have any hp figures from a boosted 2.5 12v gtv6..? And what boost was run to achieve that..?
In the end car is going very well and its quick to say the least, but i want more than 170-180hp at the wheels. Yeah its making alot more torque than a 24v sure, but why such low HP figures...? Maybe with 16-18psi i'll hit 200hp with abit more ease..? 18 psi is the sweet spot with this turbo, which is what i was told when i bought it, so maybe i should simply wind it up and see, but dont see my clutch lasting with that boost pressure. As long as i dont launch it i'll be fine...
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
Thanks for any help guys.
![Smile :)](./images/smilies/icon_smile.gif)