Got my car retuned by the same people that tuned it last time (800 miles ago). The setup only has 800 miles on it. Car made 612 @ 28psi tuned on crome. When the guy tuned the car he told me his computer he used to tune it had a few burnt circuits in it from a few miswired things before he started but he was not sure. With his computer it ideled fine and when I pluges mine in it was at 2000. He said it was the iacv that was messed in his computer, so thats why I tought it was ideling funny. The whole tune both times cost me $725. The reasone I took it back again was because my boost controller was fed and it would only make 22psi so I wanted to get a retune for higher boost. The shot is a well known shop around the area and the guys are cool but I want to know if this is a tuner error!

Today I go to the track, never boosted since the dyno tune. 1st pass car feels ok it was hot from driving a hour there it runs a 11.0 at 136mph. Second pass it blew, I got about 3/4 way down the track and it felt like there was a loss of power no pinging or anything so I got off it and it ran a 10.9 at 125mph. It also melted a few of the plugs

Setup.
62-1 turbo
1000cc
a1000 pump
84mm JE pistons
b16 block and head
Eagle strocker kit 2.0L
Darton sleeves
leaded race fuel
stock fuel pressure

Tell me what you guys this could cause this. I have the crome bin file if anyone want to se it just pm me your email address unless someone knows how to post it on here

that is number 4 its melted all the way down the piston!




















Modified by nitroice40 at 10:35 PM 10/20/2007


Modified by nitroice40 at 10:44 PM 10/20/2007


Modified by nitroice40 at 10:57 PM 10/20/2007


Modified by nitroice40 at 11:03 PM 10/20/2007


Modified by nitroice40 at 6:58 PM 10/21/2007

 

post up your ignition and fuel MAPS that will help a little more.

im sorry about your loss.

 

Whatever it was it got really really hot!

 

dude...wtf....post the maps or post the bin itself so i can open it and look through everything. You need to hold them responsible if that sh*t is foul.

 

What cylinders melted? What FPR are you using?

Definitely got too hot...could have been lean.

What fuel were you running?

 

4 melted the worst, but 3 melted also. 2 had some signs of small heat cracks.

using leaded racefuel fuel pressure is around stock we set it the first time I got tuned and since then my guage broke

 

Who is the tuner? what does he have to say?

 

It just happend today I have not told him yet. I dont want to say the name of the place.

 

The bit about his computer having burnt circuits and miswired things is retarded. If that were true his computer wouldn't work at all.

 

he said his iacv circuit was fucked he had to scale it weird to get it to idel on another car. and when the kid put his back in it was fine. It dont really sound like a major issue but just wanted to get feedback.

 

What kind of fuel was this on?

 

leaded 112

 

did the shop suggest you use a block guard and maybe say they have had bad luck with sleeved blocks?

 

PM'd

 

I wish this was a stock sleeved block.

 

i wanna know why would u even retune it if u knew he has a fucked computer

 

I didnt know untill we were already on the dyno, and I just thought it was a idel issue

 

Tune:






Please pull the pistons and take pics of everything

 

Alright, I've got the screen shots of his bins. I've got Jeff's tune he was on prior, as well as the "retune"

First Tune High cam fuel



The RETUNE....high cam fuel



DRAMATIC reduction in fueling in some areas, specifically above 20psi

First tune high ignition



The RETUNE high cam ignition



Doesn't look any different because it isn't....not one cell. It really doesn't look like a tune at all in fact, just a basic degree of retard/psi. The rise in the peak torque area is just the result of reflecting the stock map.

They leaned it out and it blew up....

 

I will thanks for the post

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">The bit about his computer having burnt circuits and miswired things is retarded. If that were true his computer wouldn't work at all.</TD></TR></TABLE>

It would work, it would suck to tune the car with a bad IACV curcuit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RC000E &raquo;</TD></TR><TR><TD CLASS="quote">Alright, I've got the screen shots of his bins. I've got Jeff's tune he was on prior, as well as the "retune"They leaned it out and it blew up....</TD></TR></TABLE>

Repost

 

I have the first tune though, it exposes the true b.s. .... HA HAAAA!!!

O.P., I think the statement that the tuner made saying "in all his time tuning cars, ignition timing never made more power" reveals his tuning philosophy. He tunes the wideband and calls it a day. He leaned it further than the first tune in an attempt to increase power and due to the change you see in air/fuel between the street and dyno, that was all she wrote.

 

We will probably never know. Two gallons in the tank at the track could have had something to do with it. A:F could have been too lean. Could have been too little ignition timing causing the spark plugs to get hot and cause pre-ignition ... ... ...

 

wow sucks, sounded like it was gonna be a stout car