big numbers on a stock 9 turbo on e85


The primary difference between the mods then vs. now are engine management (was on an AEM EMS) and compressor cover (was stock).

smoothing of 7, and from my experience this smoothing will show less then what it will on a real dynojet.. i have done around 10 cars back to back on a dyno vs virtual dyno in the past.
FWIW my car has basically the same mods minus the FP housing and cams and it made in the 440's with minimal smoothing using VD tuned on e85. Higher smoothing produced a normal looking curve and 428hp. I don't see what smoothing is being used in these graphs but I would think if I had cams I could have seen about 20 more ponies which would be right about where the OP is. So it seems reasonable.
The graphs on the first page were smoothing (3). From my experience anything past a 5 when there's not a spike (which there wasn't on these runs), starts to take away actual hp/tq so i used 3.
Also remember the smoothing algorithm has been modified in the newer VD's. a smoothing of 7 now would be 15~ in the old one approx.
A crap ton that's all ill say. Its better you slowly raise it on your car and find your cars personal limitations rather then me give you numbers and you try to run them and hurt your engine.
but for example on the stock 9 actuator preloaded to the max lets say at 100% wgdc the turbo is making 25psi at 6k
now if we take the actuator off and put the fp 25psi wga on, then we can get the same result (25psi at 6k) with lets say 30% less wgdc.. so it does make it easier to hold the boost out more.. but i cant answer your question because i dont have any solid data to back it up.
if you want me to post the boost log vs rpm and stuff i can. just let me know.
I was just curious, I stopped making torque at 21* at redline so I backed it off to 20*
Last edited by 1UpMoto; Sep 17, 2011 at 10:45 PM.
Order the 84mm compressor cover from FP and then swap it with your current cover. Then you would need a larger intake pipe (I opted for the BR 84mm intake pipe) or you could try using your current pipe with a coupler that allows the smaller diameter pipe to be connected to the larger diameter inlet. Best option is the larger pipe for optimal flow.
Order the 84mm compressor cover from FP and then swap it with your current cover. Then you would need a larger intake pipe (I opted for the BR 84mm intake pipe) or you could try using your current pipe with a coupler that allows the smaller diameter pipe to be connected to the larger diameter inlet. Best option is the larger pipe for optimal flow.
This car makes 440's with very high smoothing (7).. so yes the power is maxed just like it seems to be on your vehicle....... minus the tq in your case.
The graphs on the first page were smoothing (3). From my experience anything past a 5 when there's not a spike (which there wasn't on these runs), starts to take away actual hp/tq so i used 3.
Also remember the smoothing algorithm has been modified in the newer VD's. a smoothing of 7 now would be 15~ in the old one approx.
The graphs on the first page were smoothing (3). From my experience anything past a 5 when there's not a spike (which there wasn't on these runs), starts to take away actual hp/tq so i used 3.
Also remember the smoothing algorithm has been modified in the newer VD's. a smoothing of 7 now would be 15~ in the old one approx.
Hi Tom, nice results, I used to get spikes like that in the green and blue graphs on the first page; in my case it turned out to be a one line data jump in rpm where it would read exactly 1000 rpm lower than it should be and then continue normally. Oviously the engine didn´t go up and down 1000 rpm in .1 seconds, so I just deleted that line or added the "missing" 1000 rpm. The graph then became smotheer and power was a little down from the spike.
Might not be whats happened here, but worth a check. The power will still be kickass I´m sure
Cheers,
Ricardo
The previous owner of the turbo I have now apparently had the hotside ported by PPI. I am not sure how good of a job they do. I have an Invidia 02 housing, and plan to replace it with a ToxicFab 02 dump.
Those are all fantastic parts, my friend and I am sure that it will further liven up the stock IX turbo for you. From my understanding, PPI does outstanding port work. I am resourcing a brand new stock IX turbo with the 84mm compressor cover from FP right now as I really think it would be a stout combination with a block that has yet to be built. I wonder if anyone has done some back-to-back testing.



