[theOkilla]

Hello, I have recently upgraded my turbos and went back to the dyno to see how big of an improvement they made. I’m a little surprised at the power output and it’s considerably less than I expected.

Here my dyno of MHD 2+ E50 (stock turbos) 430whp/500wtq.

View post on imgur.com

Since then I did:
Pure Stage 2 High Flow turbos
2” BMS inlets and DCI
VTT outlets
Custom E30 tune
Dynoed at 495whp and 515 torque

View post on imgur.com

It seems like a very small difference, so I’m wondering if the tune is just too conservative? It’s targeting 21 PSI and is making that. My stock turbo dyno was uncorrected and this second one was, so the difference is even less. I was thinking it would be more along the line of 530-550whp.

[Saif2018]

Originally Posted by theOkilla

Hello, I have recently upgraded my turbos and went back to the dyno to see how big of an improvement they made. I’m a little surprised at the power output and it’s considerably less than I expected.

Here my dyno of MHD 2+ E50 (stock turbos) 430whp/500wtq.

View post on imgur.com

Since then I did:
Pure Stage 2 High Flow turbos
2” BMS inlets and DCI
VTT outlets
Custom E30 tune
Dynoed at 495whp and 515 torque

View post on imgur.com

It seems like a very small difference, so I’m wondering if the tune is just too conservative? It’s targeting 21 PSI and is making that. My stock turbo dyno was uncorrected and this second one was, so the difference is even less. I was thinking it would be more along the line of 530-550whp.

Could be because of E30, how much power does it make on E50?

Any logs?

[theOkilla]

Originally Posted by Saif2018

Could be because of E30, how much power does it make on E50?

Any logs?

https://datazap.me/u/theokilla/n54-v2-log-2?log=0&data=3-21
https://datazap.me/u/theokilla/n54-v2-log-1?log=0&data=3-21


Logged on same E30 tune. I ran e50 on stock turbos but 30% was the highest after the turbo job.

[Saif2018]

Originally Posted by theOkilla

https://datazap.me/u/theokilla/n54-v2-log-2?log=0&data=3-21
https://datazap.me/u/theokilla/n54-v...og=0&data=3-21


Logged on same E30 tune. I ran e50 on stock turbos but 30% was the highest after the turbo job.

Have you sent the logs back to your tuner for further revisions?

V2 is only second revision, and is there a reason you haven't tried 40% or 50% Ethanol?

I'm assuming your LPFP is stage 2 or better

[iqraceworks]

What did your tuner say? Why can't he push them up to 25psi of boost? Your HPFP pressure looks good...I would try an E40 mix.

There are tuners, and then there are REALLY GOOD tuners out there that have all kinds of tricks up there sleeves when it comes to tuning to squeeze extra power out of the motor.

Did your tuner mess with any of that VANOS timing settings?

It looks like you are getting a lot of timing corrections towards the end of your pull. Are you running 1 step colder plugs?

Who is your tuner?

If everything is healthy, you should be in the 525-ish range, so you aren't that far off. If you were running 26-27psi on an E40 mix, you should be in the 550-575 range.

[theOkilla]

Originally Posted by Saif2018

Have you sent the logs back to your tuner for further revisions?

V2 is only second revision, and is there a reason you haven't tried 40% or 50% Ethanol?

I'm assuming your LPFP is stage 2 or better

Yes, it’s a stage 2 LPFP, and stock for the rest of the fuel system. I definitely would prefer e40/e50 but I thought I was told my fuel system couldn’t handle that with the bigger turbos.

I did check the logs and it seems like the car is doing well fuel wise. I would definitely prefer more E85 and to up the boost more. I thought it would make more at e30 but perhaps it won’t.

I’m using Wedge Performance and don’t really receive answers when I have asked questions about the process.

[theOkilla]

And yes I have NGK two step colder plugs and fairly new coils.

[addictedtoboost]

Originally Posted by theOkilla

Yes, it’s a stage 2 LPFP, and stock for the rest of the fuel system. I definitely would prefer e40/e50 but I thought I was told my fuel system couldn’t handle that with the bigger turbos.

I did check the logs and it seems like the car is doing well fuel wise. I would definitely prefer more E85 and to up the boost more. I thought it would make more at e30 but perhaps it won’t.

I’m using Wedge Performance and don’t really receive answers when I have asked questions about the process.

Shoot Ken an email he will get back to you with a revision I'm sure.

[whyzee125]

You went from e50 fuel down to e30 and still saw a pretty big power increase. I agree those aren't huge numbers for pure stage 2 but if you increase the ethanol content a bit I think you'd see some huge power. Every little bit helps a lot until about e60-e65

[theOkilla]

Originally Posted by whyzee125

You went from e50 fuel down to e30 and still saw a pretty big power increase. I agree those aren't huge numbers for pure stage 2 but if you increase the ethanol content a bit I think you'd see some huge power. Every little bit helps a lot until about e60-e65

Yeah, that’s definitely true. I’m by no means complaining about the tune or anything Ken made. I just wanted to see what others thought because I was (perhaps incorrectly) expecting more.

Since I have to pay per fuel rating I think I would try and jump up to E50 if that’s possible. Like I said stock HPFP, but stage 2 LPFP. If that’s too much I could also do E40 but I’m hoping to get 550+. I will say the current tune is very smooth and builds great power to redline compared to dropping off with the stock turbos.

[iqraceworks]

Ken should be able to bump up the boost a little bit. 24-25psi is still plenty safe as long as the fueling looks good (and it does in your logs). It's a balancing act between fuel type/e level, timing, boost, fueling system capacity.

E30-E40 seems to be the sweet spot with the stock HPFP setup (according to the multiple tuners I've talked to). I've heard great things about Ken. You should ask him to bump up the boost a little bit.

I think some tuners just knock out an easy, decent map with good logs, in as few revisions as possible, and move on. It's fast, easy money for them.

While other tuners actually take their time, do multiple revisions, and try to squeeze more power out, while still keeping things safe. Sure, it takes more time for them, but in the end it's much more of a "custom" tune.

[Saif2018]

Originally Posted by theOkilla

Yes, it’s a stage 2 LPFP, and stock for the rest of the fuel system. I definitely would prefer e40/e50 but I thought I was told my fuel system couldn’t handle that with the bigger turbos.

I did check the logs and it seems like the car is doing well fuel wise. I would definitely prefer more E85 and to up the boost more. I thought it would make more at e30 but perhaps it won’t.

I’m using Wedge Performance and don’t really receive answers when I have asked questions about the process.

Fueling is probably your restriction, those turbos should make well over 500+ hp easily,

21psi is Conservative boost for stage 2 Pure Turbos, pretty sure you your tuner can bump it up a few Psi safely,

Stage 2 LPFP should be able to handle E40 at least.

[theOkilla]

Awesome, thanks for all the replies guys. I know it wasn’t a finished tune and was just the 2nd revision. I just wanted to get an idea of where it was at and if my car was performing as it should.

I’ll send him an email and see if we can get another 10% ethanol and some more boost.

[C.Pop]

Look at the area under the curve to judge if you're making more meaningful power. Peak HP is cute but not nearly as meaningful as people make it out to be.

[Saif2018]

Originally Posted by theOkilla

Awesome, thanks for all the replies guys. I know it wasn’t a finished tune and was just the 2nd revision. I just wanted to get an idea of where it was at and if my car was performing as it should.

I’ll send him an email and see if we can get another 10% ethanol and some more boost.

I noticed it takes a while to meet boost target. You went wot at about 2.3k and the turbos met boost target at about 4k

Whilst your at it, may as well ask Ken about it, if that's normal. There will be some degree of lag low down compared to stock turbos though.

[mike@x-ph.com]

Sounds like these questions are better asked to your tuner. Maybe he gave you a very safe map because that is what he thought you wanted.

You should talk to your tuner and tell him if you want more power.

[theobjectivist]

One bit of advice: get a dragy and check your speeds before/after each revision. Chasing dyno numbers is often folly.
E.g - In my experience, having a lot more punch lower in the band can lead to a slower car.

Also, big power may give you a shorter lifespan. Were talking bare aluminum cylinders, open deck, and non forged pistons/rods

Also, which shop did the dyno? If you dont want to drop name, was it in sac or in the sac area?

[Dave92N54]

Our rods are forged, pistons are hypereutectic cast, some ended up with forged pistons though.

[theOkilla]

Originally Posted by mike@x-ph.com

Sounds like these questions are better asked to your tuner. Maybe he gave you a very safe map because that is what he thought you wanted.

You should talk to your tuner and tell him if you want more power.

Yes, I agree. I definitely am not saying the tune wasn’t good, because it is. I’ll follow up and see what he thinks about E40/E50 and seeing what we can do there. It is definitely impressive that it gained 65whp with 20% less ethanol. I hadn’t thought about it that way honestly.

I’ll report back if there’s any notable changes and when I do the next dyno. I appreciate everyone’s responses!

[theOkilla]

Originally Posted by iqraceworks

Ken should be able to bump up the boost a little bit. 24-25psi is still plenty safe as long as the fueling looks good (and it does in your logs). It's a balancing act between fuel type/e level, timing, boost, fueling system capacity.

E30-E40 seems to be the sweet spot with the stock HPFP setup (according to the multiple tuners I've talked to). I've heard great things about Ken. You should ask him to bump up the boost a little bit.

I think some tuners just knock out an easy, decent map with good logs, in as few revisions as possible, and move on. It's fast, easy money for them.

While other tuners actually take their time, do multiple revisions, and try to squeeze more power out, while still keeping things safe. Sure, it takes more time for them, but in the end it's much more of a "custom" tune.

Yes, Ken is definitely keeping it within safe boundaries which was one of the main reasons I went with Wedge Performance. An extra 5-10 horsepower isn’t worth a blown motor. I was more interested in seeing if my results so far were typical or high/low etc.

[mike@x-ph.com]

Originally Posted by theOkilla

Yes, I agree. I definitely am not saying the tune wasn’t good, because it is. I’ll follow up and see what he thinks about E40/E50 and seeing what we can do there. It is definitely impressive that it gained 65whp with 20% less ethanol. I hadn’t thought about it that way honestly.

I’ll report back if there’s any notable changes and when I do the next dyno. I appreciate everyone’s responses!

[Silent9n54]

ok so you didnt make a ton more "PEAK" power going from E50 to a E30 tune.

You made 490ish at 6500 RPM with pures

You made 350ish at 6500 RPM on stocks

That is a huge gain and you are running E30 compared to E50 with stocks.