here is the graph... I was very impressed by this turbo. It spools just as fast as stock and makes a ton of more power up top.

 

Nice numbers evoonyoass. Are you happy with the turbo and such? I can't tell from your post, it just looks like you made pulls and posted information

The normal actuator on the 20g's will work GREAT on pump gas and you can run boost levels as low as you would be able to with the stock turbo.

The HD actuator is for race gas/alky mostly. My car probably runs a little less boost with the HD actuator on it given the entire engine/head is built and has larger cams in it.

David Buschur
www.buschurracing.com

 

Those two dyno charts are like 80 whp apart from each other at 7,000 rpm. I'd say that is a significant improvement!

David Buschur
www.buschurracing.com

 

Doug, do you mind zipping the runfiles and uploading the zip file as an attachment? I'd like to put those files into WinPep to do some comparisons.

I'd also like to note that these figures are SAE corrected, so the uncorrected numbers are probably close to 15whp/15wtq higher if it was around 40-degree in Atlanta. I won't know for sure until I can compare the run files.

The power difference is huge if you look at how the first curve peaks at 6000 and stays flat to 6600 before falling off, but the 20g-9 continues climbing from 6000-6600 and then beyond up to 7000 before it starts to taper off. The curve I'm looking at there would be much faster at the drag strip than the previous curve, despite the peak differences not being too far off.

 

Edit: Because of the knock issues we were having I can't honestly give an accurate opinion on it just yet. Once we switch out the manifolds and see if the knock count goes down, I will give a complete review.

What you don't know about the C16+meth tune is that on the 430 whp 377 trq the car is knocking between 3-3.7 volts and I feel as it is pushing it on the stock motor. We couldn't hear any knock, but the AEM was showing it.

We were only allowed to run very little timing and that is why the car isn't making more power at this time.

 

I think you are looking at the graph wrong, that is about 50 whp difference at 7000rpms.

 

What kind of timing are you pushing between 3k rpm and 7k rpm?

 

2 deg down low and 13 up top on C16 + Meth. That was all we could add with the car knocking.

 

I run 23.5 psi on 91 octane, no water/meth, and no knock

I wouldn't be upset with these numbers, i am only making about 30more whp out of my 30r on c16, and spool is a tad slower then your car.. You have such a huge power band, you need to stop focusing on peak power so much.

 

wow, that is VERY interesting. On my Stock MR turbo i am pushing 8.5* ramping to 20*-21* on pump gas ... There is some torque missing right there. I wonder why the car was knocking? Now on Meth+c16 you should be able to push even more timing than that. Something doesn't seem right here. Now just my the lack of timing you are runing the HP is way higher than the torque, which on a 20g is well... not expected....just my 2 cents

 

Did you dyno at TopSpeed? Please don't compare your numbers to mine unless you did. There is no comparison between what you did on "your" dyno and I did on this one. Two different dyno's!

Your car might make 60+whp on the dyno I used yesterday, so like I said, no comparison.

 

not trying to start an arguement, but, didnt the rnr manifold you are using seem to cause knock issues in another test, which may be why your timing is low, compared to the timing that that has been stated off the stock turbo on pump...

 

No infact i didnt.. The point i was trying to make is that, you have a huge power band, and the car is going to move. You have tremendous power over that stock turbo graph, in all the right places.. Numbers are just numbers, get the car out to the track and see what it does.. I have seen cars on that dyno at around that whp run low 11's with average drivers. What more do you expect then that, on a modified stock turbo, on the stock motor? If you don't like the turbo take it off.

Secondly you seem to have a **** poor attitude judging by the way you responded to me.. Don't be such a ***** to people who are trying to stay posative..

 

I'd say you are reading the graph wrong. You're comparing a torque curve to a hp curve.

shiv

 

Peak numbers arent bad, but im curious why there is only a minimal tq increase?