I agree the dipstick is a pain to read. The best reading is when cold. I have the aps oil pan my next change I check the level with 2.5 - 3qts in the motor. They may not have checked the oil in a long time or didn't put in the right amount at the last change.

 

Jimmy sorry to hear of your troubles, stay with it, things can only get better. As far as the tune goes, I wouldnt have left AA(or if you werent there I would have sent somebody more knowledgable) if they gave me a TT Z with a/f around 13.1, I dont care if it was at 3000rpm's or redline imo thats too lean for FI. Who knows what the hell they did with the timing. Seeing as how your in Jersey why didnt you take the car where Jason @ MRC tuned his 11 sec APS beast? Did you think that tune was ok when you saw those dyno numbers? I would have not been happy with those a/f's. Good luck to you in the future.

 

That tune is jacked. The lower number on there is TOTALLY F'd up, and even after you had it tuned it's still pretty damn bad. 13:1 when you are boosting through 3000rpm? That's retarded. Whoever tuned your car at AA needs to go back to EFI Tuning 101 I think...

Sorry to hear about your car.

 

ah...that makes a lot more sense..

 

Sorry to hear about your loss. This is interesting though because I *believe* this is the first 300hp failure that's been widely publicized. The "oil was low" rumors that seem to be flying about are confusing the issue a bit. I wonder how the rods themselves held up? Those were supposed to be beefed up...

Also, how long had the car been sitting while you were in Iraq?

 

They had to add 3 qts to get the oil level to reach the LOW level on the dipstick.On an APS car the LOW mark on the dipstick represents a full oil level.
So just to clarify, JIMMY's CAR WAS ALOMST 3QT's OF OIL LOW On top of that the oil was REALY filthy,and he said he was about 1000 miles overdue for a change.

 

i just want my car running strong again... whats done is done...im not blaming anyone except myself.. i knew what i was getting into when i went FI.. im not the first to blow an engine and im not gonna be the last.

 

and just to clarify i wasnt at full boost it was probably at 2 or 3 psi when it blew.. but not getting on it hard at all.. just slightly acceling to pass a car

 

Hey everyone this is Mike from Atlered Atmosphere, where Jimmy's car was last tuned.

With the Tnetics ST it is normal to see high 14's/low 15's at idle (this is normal and safe with any 350Z/G35 na & turbocharged setup). 10.x at wot is more than sufficient fuel to keep the engine happy.

After looking at the dyno graph Jimmy scanned it is very easy to mistake the APS Baseline run (the first run we made before changing any tuning) which is leaner low-mid rpms than his tune from us on the same chart (our tune is the very light line). On the note of a/f tuning, if you look at other recent graphs of tuned Tnetics & turbo setups on the forum you will see our a/f is very similar to those.

After the 109th 350Z/G35 we've dynoed Jimmy's G was setup right. My personal 350Z twin turbo has a less concervative tune than Jimmy, makes 450rwhp @ 9psi, and doesn't skip a beat.

When I am done with the final tune on the dyno I make slight fuel adjustments (enrichments) I've learned over the past 10 years tuning vehicles to ensure best relaibility. So the final a/f is .2 to .3 a/f richer than displayed on the dyno graph.

Why do we do this? Because off the dyno most vehicles will need additonal fuel to help compensate for factors such as the intercooler working more efficiently / cooler denser air.

I called & left a message and e-mailed Jimmy to see if there is anything we can do to help him out with his unfortunate circusmstances. I'll write an update (and more elaborate post if Jimmy gives me the okay) when I get intouch with him.

 

Sorry to hear of your misfortune Jimmy. Here's to hoping your block is 100% intact and everything will go smoothly with your engine build.

 

Guys im sorry to be a little behind but What is The stock ocatane setup from the APS TT. Becouse i use 93 since the first day.

 

They are preset to 91 octane fuel.

 

The rods aren't the issue here. 287 or 300hp motor wise. It's become the general consensus that since we have more people that ever boosted and less failures than ever, that 95% of these motor failures are tuning, install or upkeep issues. No one knows the strength of the stock rods yet because we don't have a consistant high power level that motors "pop". When you start seeing guys reaching a power limit where half or more of them blow up if they go any higher, that's when we'll know that we've reached the limits of the stock rods or pistons.

 

sorry if I missed this, but do we know what broke on this motor?

 

Is it ok to use 93 octane with the stock engine with the out of the box tune

 

Absolutely....you will be even safer.

 

no to be anoying but why does it make it safer And thanks

 

I belieive higher octane is harder to burn, which means less chance of pre detonation.

 

Ok thanks alot for all ur help

 

No...it burns more slowly. Detonation is an "explosion" in the cylinder. Higher octane fights off this explosion tendency more effectively.