Yeah, its a play on words. I guess not everyone got it. Anyway, I still think it is both impressive and disappointing at the same time. Has this happened to anyone here before. I think thats kind of amazing. Just look at the feedback above. Apparently Greddy's never breakdown...Thats amazing..isn't it?

But anyway, seriously though, I am truly saddened at the fact that I simply don't have a warm, and well lit place to work on the car right now.

I was planning of renting a storage facility garage size room and doing the work indoors that way, but I would have to use a generator to provide any needed electricity. Other than that, I am holding for the possibility of getting the chance to use a friends garage.

Once I sort that out, the turbo's are coming out and going back to Greddy, via Noah at GT Spec. Shouldn't be a problem since they were new. But I am still keeping my fingers crossed.

 

No one said Greddys NEVER break down, however issues are fairly RARE, epsecially on new turbos. You may be the lucky one of course and get off with some new turbos. Were hoping for the best for you.

 

Check the oil feed to that turbo when you pull it off. Hopefully it didn't become oil starved and roast itself.

Actually, that might be good if you find that because it would mean the motor wasn't the issue...

edit: The more and more I read into it the more it sounds like he just cranked the timing or fuel and fudged the motor... Unless he was sitting there messing with corrections while it made those crazy numbers at 11psi. I hope it's not the case though...

 

If a strap on the dyno broke, wouldn't it make the numbers lower?

 

Would you run faster if I strapped you to the ground or if you were running freely?

 

Thanks Julian, I appreciate it.

 

Actually, my understanding is that when the car is strapped down with greater force it may actually in assist in putting down power to the rollers more efficiently... I'm going to have to agree with failsafe in that it wouldn't make numbers any higher if a strap broke. Some of the things this tuner is telling you sound fishy.

 

Sorry if I came off a bit smart-alec, but I am by no means a dyno wiz, I can only tell you that in the middle of the first run it broke. When something goes wrog in the middle of a run, the numbers it spits oput cannot be as accurrate as when the car is secured properly. I believe this most likely had an effect on the numbers, which is why i didn't put the HP numbers in bold and enlarge them trying to make a big deal. I will be happy when I can get a dyno sheet demonstrating a nice power curve and driving a car that is safe and yet scares the crap out of me.LOL That would be a great day.

I'm almost there.

 

I hope everything turns out well for you.Good luck.

On the other hand,threads like this prove me even more that Forged/MRC/GTM are the only way to go if you want quality FI job.

I'm considering going FI but in my case I would have to simply purchase another Z, have reputable US tuner do all the work and then ship the final product to Europe.

 

Actually if you strap the car in a bit "LOOSE" it will make some more power on the dyno, however there becomes a point where it will spin the tires on the rollers. If a strap broke, the tires could have let loose and spun so fast that the car would have abruptly bounced off the rev limiter.
However the dyno chart would look all whacky and zig zagged on a Dyno Dynamics.
Randy, do you have the very first or any of the graphs from that day you can post?If not get them all and post em up.

 

True, if the wheels actually spun this could be the case. I have a dyno sheet where mine spun and made a weird hump in it. Still 545whp is a bit high without wheel spin.

It's really beside the point, though. He's just gotta get the motor and turbos checked out to know what really happened.

 

I'm sorry, but I was not present when Junior was tuning. I was at work when I got the call that I made a bunch of power but the turbo failed. When I asked for a graph, he told me that he was tuning with other data showing on the LCD screen and it wasn't worth printing. I emailed Junior the link for this page, so if he can produce anything, I'm sure he will post it up, but to the best of my recollection, it is simply not available.

Trust me I wish I had them too.

 

Interesting I would say....Good luck with that one..

 

unstrapped cars will make more power.

 

Wasn't worth printing? I wonder why he'd say that...

 

Do a compression test before you sent the turbos to be rebuilt. If everyone says the broken turbo seals are unlikely, it would be best to rule out other stuff first. Take off your intercooler piping and check for oil, if there's no oil, the turbo is most likely fine.

 

Car blew a turbo... There is alot of mis information in this thread...

Car made 544whp on the setup screen while setting gear ratio.. It logs MAX output of various parameters, HP, AFR, ENG SPEED, GEAR RATIO, BOOST.. Its just the setup screen, Im not even sure if you can print it.

Car made 488 on the very first logged dyno run... 13psi (11.8-12.0 on the UTEC) on the Dyno MAP sensor, 11.0 AFR flat across, Power started to fall on that run toward the top of the power band.. I will post this chart tomorrow.. I just need Randy to send me his VIN so I can pull the file. Next pull was about 420whp.. Same boost, same AFR...

Problems started while setting up the car for a full pull.. Started a few half pulls to set the AFR/Base ignition map.. First problem was that the MAP sensor was reading 20+ PSI at all times... re calibrated, checked connection, vacuum.. Still bad.. replaced it and it was ready to go. Finally I was able to pull into boost cleanly.. car started to smell of oil smoke and the exhaust was blueish.. Made the first Full in the gear ratio screen.. 544.. This is with the 1.20 correction factor which reads like a dyno jet.. Car made a nice puff of blue when I let off.. I shut it down, checked oil etc... Nothing.. Started it up made another pull 488... The graph nosed over on the top end and the car made another large puff.. At this point I was concerned.. I looked it over again.. and decided 1 more pull. Next pull netted 420whp with the same exact tune and boost... Lots of smoke this time... Shut it off for a while.. Let the smoke clear.. Started it and gave ita rev.. Started right up, revved perfect.. just with a whine coming from the driver side... Shut off the car, pull off the inlet.. and notice it still smoking... Slight oil in the moth of the turbo.. So the turbo is shot.. Call randy tell him what happened.. Mention that I noticed the low oil pressure.. he states that it was always like that... Tell him its not right and thats that he comes to get his car when he is off work..

Blown head gasket... Smoke out the front of the car when the dump tubes open.. Manifolds would get TONS of coolant... Pressurize coolant, antifreeze everywhere.. Nope... that didn't happen.
Cracked Piston.. Same as above but involving OIL... Didn't do that either..

Poor attempt at a tune... I have tuned quite a few 900+ whp 6cyl.. BMWs, 2jz, 750 + WHP VG30s, 500-600whp Subie and Evos.. ... I have tuned 400, 500whp VQs... I would think its safe to say that I know my way around most EMS and motor setups...

In short.. Randys car blew a turbo.. I would blame it on low oil pressure... The death whine of a turbo is something I am pretty familiar with... Motor has to get inspected anyway to see why it has low oil pressure.... It will kill the next turbo that goes on it as well if that is not addressed..

I will say this.. There are alot of people that claim to know what they are doing and post this and that.... Randy gets 10000% my respect for going at this and ACTUALLY DOING IT... The install and the overall quality was great!! Aside from the map sensor the car ran flawless and problem free until the turbo issue... which of course is not Randys fault.. Props Randy!

Junior

 

Its called helping people out unconditionally.. We are all in this for the sport, I understand time is money.. trust me.. I do.. but the dudes car is broken.. Do you really need to bust his *****? I have helped him as well.. you think I would post something like this if he went to you or anyone else. . . .

 

Don't worry, he can get a little moody at times

 

^^^
LOL... Yeah, he gets a little ruffled at times. Try not to take it personally.

JuniorTT - thanks for the clarification.

OP - please keep us posted. I'm curious to see how this unfolds.