I'm pretty sure it is when I'm in boost...ill check today though

 

I sure hope not cause if it is its gonna blow as that is what it should be at idle and steady cruise.When in boost you want to see much richer a/f so do not boost at all until you get it checked.You should be seeing mid 11's when in boost.

 

My best trap speed was 115mph and I was putting down around 400-415whp (dynojet). Don't worry too much about your E/T, as a noob without alot of seat time your trap speeds should be a better indication of your actual power and potential.

 

I was thinking the same... if so that's his prob right there...ecu is basically going limp because of all the detonation

 

When I bent a rod I tried to figure out what may have contributed to the failure, I was running a modest amount of boost and WHP, seemed a little unusual to me so I looked at the tuned AFR… car was in the mid 12’s all the way through… tuning issue? Or is AFR unrelated to a bent rod?

Sorry for the thread jack…

 

Ran the car today...a/f is fine...when I'm in boost its at 12

 

the red A/F plot is scary -- how long were you running like that?? Even one hard pull like that could have dented a rod -- over 15 for the first part of boost then drops to mid 12's (also dangerous IMO)...You should be mid 11's on a stock VQ the ENTIRE time in boost. Personally I run mine at 11.5 - 11.7 from 1 - 10 PSI. 3 years now and no issues.

Also, about timing...we have no clue where your timing is at on those dyno runs. Too much of it regardless of A/F will also put a hole in your block.

We also don't know what your AIT looks like... too hot and you'll be detonating like a machine gun.

 

I think you mean the blue one looks dangerous, right?

The blue was my car and the red was another car with a different tune but same setup. Maybe 3k miles like that, it blew my first time at the drag strip with that setup.

Anyways, I emailed the tuner a month before the engine failure telling him my gauge was reading lean and he kept telling me the car’s fine so I assumed he knew what he was talking about and I took it to the race track and bent a rod on my second run, that’s when I knew something was strange so I pulled up the dyno with the AFR to take a look for myself and found out how lean the car was running.

Of course I get a “car was tuned in the 11’s…motor bent a rod because it had junk internals…you don’t know what you’re talking about, rods don’t bend from running lean…” BS excuse when I ask the tuner why he tuned the car so lean.

And now I get to pay for a premature engine build.

 

Who is your tuner??? They said that for real?

 

It was along the lines of “You bent a rod…so it’s unrelated to fueling”

I don’t want to name any names…

 

Well that's BS... lean condition causes DETONATION which causes BENDING of rods (at the very minimum). You're lucky if your block doesn't have windows.

 

Yeah, that was my consensus too, but some people hate taking responsibility or even accepting they made a mistake… But what do I know; I’m no big shot tuner.

 

Here I am...poor shifting, Rolling start, street tires, and 13.5 @ 109mph
All things were going against me, but I did the best run I could for what I had

 

hmm, guess now I have an excuse to go up there an practice driving =). I'm still trying to get retuned but noone tunes the unichip anymore and i don't have uprev money because my sister just had a baby and the family flew out to cali to see him (there goes all my spare change)

 

lol, that’s too funny… here’s my video from the track (I bent a rod as I shifted into 4th gear on this run), 13.5 @ 108 mph

http://www.google.com/url?sa=t&sourc...FrjhzQ&cad=rja


(Not sure if that link will work, don’t have YouTube access at the office…)