he stated that the boost drop was tuned in by ZZP, and is intentional, so....yea. Nothing unexpected here.

 

Well if ZZP did write the tune to drop boost that quick in the higher rpm's to protect the drivetrain ...... they sure aren't worried about hitting the clutch with 370 wtq at such a low rpm ...... it's gunna toast it .

 

only if its slipping. Isnt the clutch in the LNF F35 supposed to mbe improved over the LSJ F35?

 

PIITB!!!! zzp ftw

 

Yep ..... the LNF clutch has a higher torque rating for sure. It's that the motor makes peak torgue at such a low RPM . I'm pretty sure I'm not making 370 ftlbs with my 24psi trifecta tune with charge pipes and catless DP ....... but it will slip the clutch in 3rd gear or higher from a low rpm roll , just like a lot of other people have stated . Thats why it didn't really make sense that they were worried about the drive train in the higher RPM's enough to cut boost 6-7 psi ..... but yet they hit the clutch with everything at 3000K rpm . In the higher rpm's my clutch has never slipped 4K and above.


Maybe someone from ZZP could chime in and enlighten us , cause there is prolly a misunderstanding somewhere along the line.

 

Maybe my tune is screwed up could that be a possibility.

 

Nice #'s op, When i bought my car it had k&n dropin, hot pipe, and catback and trifecta it put down 267/320. Then had it HPed w the same set up it did 276/340. Since then ive got MES dp, cold charge pipe and a retune, and mt clutch hate low rpm rolls. But thats beside my point here, wut im wanting to know is wut gear did you do you pull in? All mine where done in 4th and my top speed at 6500 was close to the 140 range(according to the speedo NOT dyno) Cuz i noticed yours is barely over 107 at 6500? Like i said was just curious is all.

robk

 

Those Win dynoes read kinda weird but if the sniffer is correct your A/F is too rich 11.8-12.2 average it seems. Even for a "canned" tune that is still too conservative on the A/F IMHO.

 

The guy that did my dyno said something about timing and something about it can be adjusted a bit more in the ratio. He said too lean is bad but rich big deal *sarcasm* so I assumed I was a bit rich

 

I bet he would crap his pants then if he saw a GM Stage 1 car dyno, 21 psi and 14.0 A/F until ~4500 RPMs then tapers to 13.5 then 13.0 until redline.

 

I guess this is why nobody from Trifecta has hit 11 seconds on stock turbo like zzp has claimed they have. Also zzp told me I need to get a new clutch with this tune.

 

why are u dropping to 16pis?!?!?! your HP starts to drop a little when PSI drops... plus the A/F is rich too... i mean if ZZP told you that they drop down the psi for "safety" reasons there is something wrong... the motor is happy runing 20-22psi all day... idk why they would tell you that... thats some weird graph..

 

I personally do not like the spike in boost from 3000-4000. I keep my boost levels at a more conservative 21-22 psi. I also prefer to lean it out, like GM and Term2 do. I wonder what the timing is like, because the last ZZP map I saw had less timing than stock. It was weird.

 

The dyno graph doesn't look too bad at all for a mail order tune. We definitely don't set them up to run real aggressive because every car is a little different and the tune needs to be safe. As far as the boost fade and torque numbers- this is not a typical dyno test. If you look at the chart, you can see that there was already over 6psi boost at 32mph in 3rd gear. Then it took 18.8 seconds to reach 106mph! Apparently, this dyno was set to load the car WAY more than it would ever see on the street or especially on a Dynojet. Accurate loading would have resulted in the test taking closer to 12 seconds, not 18+. Because of this unrealistic load, the torque numbers are higher than they would normally be. The boost spike is also higher than normal due to the increased load, which inflates the torque numbers. The long pull is also likely responsible for a little more boost drop at high RPM as well. Exhaust pressure would be through the roof trying to run 20+ psi for several seconds with the stock turbo and stock exhaust. I'm guessing that the 16.6psi at the end of the pull was more of a result from the extreme exhaust pressures not allowing the turbo to spin fast enough to support 18-20psi as it normally would. Decreasing the load would most likely lean out the AFR a little as well.

 

No, it didn't. You either looked at it wrong, or it wasn't a ZZP file.

 

he is probably on 9*-11* of timing right now.. its not aggressive... idk i think they have to re-tune it

 

or that...

 

What the hell, Matt. Looked at it wrong? Seriously?

I was told it was a ZZP mail order tune. There are 2 columns that are significantly less than stock. It was weird, but that's how it was. If it's not ZZP, then so be it, but don't tell me I can't read the table.

 

Are you setting the PE lambda values at 0.83-0.80? Or is that dynos sniffer not reading right?

 

I'm not sure why you are giving me a "what the hell" when I have to come on here and read false information that you are posting about us. I simply stated that you either looked at the file wrong, or it wasn't our file. Now that you are saying "the table" tells me that you may not have factored in all of the tables when making that statement. Either way, it doesn't matter. Your statement was false. The only place we decrease timing is at moderate loads in the main spark chart. If you look at the AFR timing and IAT timing charts, you will see that you still end up with more timing than stock in pretty much any condition. There are reasons why we set the timing charts up this way. I have done more dyno pulls on my Cobalt than everyone else that has posted in this thread combined. For these reasons, I don't care too much for coming in here and reading that we run less timing than stock and that we do stuff weird.

For a comparison on the dyno charts- here is a customer who came in the other day. He has a custom charge tube and the rest of the car was stock. I flashed our mail order file on his car and dyno'd it.

As you can see, the boost ranges from a little over 20 to a little under 18. The AFR also averages 12.7. This was done on our Mustang dyno with a weight of 3100 set for the car. This should be a realistic comparison to what it does on the street.

 

Our file averages .86 commanded.

 

Then it is the dyno setup or the sniffer because 0.86 is 12.62 A/F. His car could also have been going into COT PE Lambda values as well. I am assuming you keep them close to stock for someone with the stock cats. Win Dynos are strange I do not care for them.

 

Yeah, it's definitely a strange dyno test. 18.8 seconds for a 3rd gear dyno would have required a serious amount of load!

 

Yeah that is at least twice as long as that pull would take on the street.