Mercury

I want to see if this makes sense... And just to clarify, I am not doubting my tuner. (he has tuned about 4 of my cars over the past 7 years with excellent numbers.)

Here is what is done to the car.

ZZP ZFR6758
ZZP 200 Cell Catted Downpipe
Hahn IC pipes
CS FMIC
KY Stage 3 Clutch

It was an extremely hot day. 96 degrees outside! This was on a mustang dyno, tuned with HP Tuners.

318 Whp
333 Wtq

The other numbers on this graph are from the previous tune they did with the stock turbo.

Any thoughts?

Devin86

You can hit those numbers with the stock turbo but every dyno is different. I would have mabe sombody else look at the tune see if anything needs touching up. What's your psi, afr, timing all that good stuff?? If it's just a mellow tune well then sweet. Better pull up top regardless lol

LNFTX

is your tuner familiar with tuning gdi?
what vehicle is this on?
do you know any details of the tune like psi or timing?
every dyno will be different so over all numbers can vary greatly
people have dynoed 450+ on this turbo but there are a lot of factors in that
im having trouble seeing the dyno sheet Cleary for some reason but looks like you picked up about 40 or 50 on both sides which is kinda underwhelming

Psykostevo

Well, that's stock turbo territory unfortunately. You're potentially missing about a bills worth of horsepower.

Mercury

So what you are saying is that the ambient temperature shouldn't have handicapped the numbers this much?

Psykostevo

Wonder if tuner understands Torque Based Desired Airload, Optimum Spark Tables, Pressure Factor RPM, etc.

Most tuners are still behind the learning curve for Direct Injection motors. They are totally different to tune than the old LS2 style ecms. You can't just go "well, AFR is good, and I turned your boost up."

Psykostevo

I live in Phoenix Arizona and hit those numbers on stock turbo when the dyno reads 114* outside @3,000ft elevation.

Psykostevo

I'm not trying to be cocky or disrespectful. Just helping to answer some of your concern or curiosity.

Mercury

My tuner has tuned a wide spectrum of cars from vettes, evos, up to turbo lambos so I am pretty sure he knows what he is doing.

Could there be something wrong with my motor/turbo?

I will see if I can get the boost and timing information from him tomorrow.

Omiotek

iTrader: (2)

what kind of boost were you running? what kind of timing? etc etc.... thats what really needs to be asked here. YES the numbers seem low.

tuned08ss

just because he can tune vettes, evos, and lambos doesn't mean he can tune a DIRECT INJECTION balt

Devin86

He could tune space ships. Still not a LNF. Those numbers say his tune isn't very potent a few tweaks could make 30hp+ more lol

ae_xiong

iTrader: (3)

Exactly what this guy said. Op, if u really wanna know if ur tune is good or not then I'd suggest u get a different reputable lnf tuner on this site like Terminator2 or 09cobaltss1, etc. Then u can dyno ur car again and compare the difference. That would ultimately confirm ur suspicions.

LNFTX

this isnt a disrespectful statement towards your tuner, its the truth we've seen it here before
if you have someone local with hp tuners get a log and post it here and or hp forum and someone could get an idea where your tune sits curently
how many pounds of boost are you hitting?
if your at less than twenty pounds that wouldnt be all that bad?
in the end if your car is mechanically right then either your tune is holding you back or the dyno was fubared in sone kind if way

Omiotek

iTrader: (2)

^^^^ this.....

We also see a lot of guys using to tuning port fuel setups attempt tuning these and tune them way to rich. So no ones saying your tuner is clueless but he just might be inexperienced with a DI motor

Psykostevo

My guess would be he didn't properly set up your Desired Airload, Pressure Factor, Optimum Spark, or other tables. These types of Torque Based tuning targets only exist on Direct Injection ECU for the most part. He could have set your Max Torque Airload table to 100% and finely tuned your fuel and timing and the means little more than a hill of beans.

Without an understanding of Torque Based tuning in an ECU, you could literally think you are telling the turbo to "give it all she's got captain", and it's just going to be sitting there smoking a blunt going "nah bruh, we good where we at."

Think of it like this. Normal ECU work like coal miners. They get in and get the job done and you only have to treat them right and give them direction to get started.

Torque based ecu are like Walmart employees. You tell them to stock the shelves and they will stock the shelves. But once those shelves are stocked they're going on a smoke break and hanging out in the break room. You have to give them very explicit commands or else they are just going to produce the least amount of work to get the job done and not get in trouble.

I've only tuned over 1,000 or so LNF since the came out in 2007 (solstice GXP), so I could be wrong.

Mercury

LOL, he tuned one of the fastest tune only Cobalts back in 2009 that was running 13.40s on stock tires. He has tuned many of these cars. That is why I am thinking something may be wrong other than the tune.

I should hopefully have the timing and boost information today.

Psykostevo

I'm not sure that 13.4 was close to the fastest tune only Cobalts. Perhaps your tuner does have extensive knowledge, I don't know him personally. You should just understand that there are a huge number of crappy tunes that come from your typical speed shop. Many of us assume that he might be a little weak on his DIT tuning knowledge because your power looks to be significantly low (to the tune of 60-100 whp, and 80-100 wtq)

kzak104

iTrader: (1)

TIL my stock turbo was a zfr

Jn2

iTrader: (1)

What is your 60-100mph times(no stop watch or eye balling)
Can you post a log?
How much boost are you pushing?

A friends ss/tc put down 380whp with a bad ring on #4

cmiller8006

iTrader: (3)

You come in here asking about how your numbers look, every single person says your tuner most likely don't know what he is doing with a di car and you come back with I am sure my tuner knows what's going on. As asked a hundred times, what's the boost level, those aren't bad numbers at say 15 psi on the zfr. What's the afr?I will be the next one to say it, your tuner prolly does not know what he's doing with the lnf. And 13.4's is not close to the fast lnf's on street tires in 09.

cmiller8006

iTrader: (3)

And for boost info. Just look at the pillar?

Snail_SS

iTrader: (3)

Its funny how he doesnt say the boost hes running.

Mercury

Wow, the users on this forum sure have changed over the years...

As I said, I am trying to get the information from my tuner (timing/boost) My stock boost gauge is nowhere near accurate. I believe it is malfunctioning.

double clutch

iTrader: (1)

You said you would have it today, 10 hours ago. Today is pretty much over. No way in hell you should be putting down low 300 on a zfr. Thats easily capable on a ko4. Im sure ur tuner would have said something if u had mechanical issues. He prolly just doesnt know what hes doing