KB Dyno Tune Question

[Durrman]

I went in to have the car Dyno'd to see what kind of power I'm putting down with the KB chip, and my car died on the dyno. The odometer goes to all dashes, and it won't start. When I pull the KB chip out, it will go back to "normal" and start fine. Put it back in and computer goes crazy again.

So... I had the guy do a custom tune (already had an X3 from the gear change).

He said that the knock sensors pull timing from 4k RPMs onwards. Does anybody else know what their tuners did when tunning the 2.1 KB intercooled kit? He limited how much timing the knock sensors will pull, but he left them on. He said timing is in the 12-14 range.

Also, what kind of HP/TQ are people seeing on a Mustang dyno? I hit 336 Ft/lbs at about 4k RPM, and is slowly drops off after that. The HP gets as high as 337 at about 5600 RPM. That is as high as the tuner went. AFR is ~11.4 across the board.

On this dyno, stock, my car put down about 315 ft/lbs and about 280 HP.

The HP is still climbing at 5600 RPM.

Boost is right on at 9 PSI.

I'll post up a scan of the dyno print out tomorrow at work.

Is running the dyno up to 5600 RPM "good enough" to know that the AFR will still be good around 6500 or so? I want to be sure I'm not risking anything by rev'ing past 5600.

And does the HP/TQ sound reasonable? I wish I'd had a chance to see what I was pulling with the KB chip.

Seat of the pants, feels strong, but I'm a bit nervous about this tune.

Also, sending the chip back to KB so they can check it out. Maybe I got a bad chip. Cleaned off the contact on the EEC enough times...

[jchambers]

Likely, the KB chip isn't the correct strategy.

I'd normally tune a 2.1KB like yours for more around 19-20 degrees on 93 pump at the 9psi. KB will likely push a little more. I'd also shoot for an AFR around 11.6-11.8. On my Mustang Dyno, the base intercooled 2.1 kit is worth more like 450 RWHP. I'd run it all the way up to the redline to ensure that fueling and timing are correct. In terms of the knock sensors, I'll eliminate the KS ability to add timing but let it take up to 3-4 degrees when it needs to. This is assuming that you tuner has mapped the edge of borderline knock.

[DSPTurtle]

Man, sorry to hear you are having all these problems!!! You should be 100 ft/lbs higher all the way down at 2,500 rpms. At least that is what happened with my bone stock Mach after the KB. Those numbers are way down. Sure, the Mustang Dyno is a little more conservative, but definitely not by 100 on both trq and hp.
And yes, I am running the KB chip.

[Durrman]

Originally Posted by DSPTurtle

Man, sorry to hear you are having all these problems!!! You should be 100 ft/lbs higher all the way down at 2,500 rpms. At least that is what happened with my bone stock Mach after the KB. Those numbers are way down. Sure, the Mustang Dyno is a little more conservative, but definitely not by 100 on both trq and hp.
And yes, I am running the KB chip.

It is starting to get on my nerves a little bit. Maybe a lot...

The guy doing the tune didn't seem to have any idea what to do about the knock sensors, and the power, according to the dyno, isn't there - but I will say, with this new tune, I spin the tires hard in 1st and 2nd.

So, I tihnk I would rather run the KB chip then the custom tune I have - basically a waste of $850 or so...

I got a RMA from KB, and I'm sending them the chip today. When it works, it works great, but then it will up and die, and won't start back up again. If I pull the chip out (I've had the EEC in and out about 10 times now...) it will start and idle fine.

So, I think when I get the chip back from KB (hopefully a new one?) I will try to run it again. If it dies, I can pull the chip and load the custom tune form the X3 and go, but hopefully a new chip, and another round of cleaning the computer connector (it is down to the copper and very clean...) will have everything running good.

[Durrman]

Here is a scan of the dyno graph. It is my stock pull from a year or 2 ago, and yesterdays. It should be obvious which is which.

[Durrman]

Originally Posted by Mach1Marauder

Sounds like you need to use the new chip or find a new tuner. That chip is $850????????

$850 was the total for the custom tune. About 5.5 hours at $165/hour plus tax and setup on the dyno, etc. The custom tune is programmed with my X3, so no chip.

[Furinox]

Wow thats a rip off man. I'd tell him he needs to fix it or i'd do a charge back on your card for not getting what you paid for. I JUST started tuning and I could tune it in half that I bet. I definitely wouldn't trust that guy's tune. I've been tuning for about a month and even I know that you can scale back the sensitivity of the knock sensors which is good practice when adding a blower. Heck I've had my knock sensors turned off even when I had the vortech.

[DarkMach1]

Originally Posted by Durrman

$850 was the total for the custom tune. About 5.5 hours at $165/hour plus tax and setup on the dyno, etc. The custom tune is programmed with my X3, so no chip.

HOLY RIP OFF BATMAN!! not only that but he did a horrible job, dont pay that crook sh!t!!!