# why you dont let MPD47 drive your car.... **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [January 27, 2006, 8:35pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403 "2006-01-27T20:35:30Z")\ **Posts on this page:** 15\ **Page:** 2
**Author:** ![Carnut](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carnut/32/7590_2.png) [@Carnut](https://forums.speedlife.net/u/Carnut)\ **Post date:** [January 28, 2006, 11:29am UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/21 "2006-01-28T11:29:41Z")
wow, that is one destroyed piston, I have some at the shop that top it though 😛 That was caused by extremely high cylinder temps. Either you took too much fuel out or ran it with too much fuel and not enough timing. Awesome. Well at least you have the volvo :tup: ---
**Author:** ![MPD47](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mpd47/32/7383_2.png) [@MPD47](https://forums.speedlife.net/u/MPD47)\ **Post date:** [January 28, 2006, 11:50am UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/22 "2006-01-28T11:50:45Z")
Haha, no, he sold the volvo awhile ago. ---
**Author:** ![tnick24](https://avatars.discourse-cdn.com/v4/letter/t/f05b48/32.png) [@tnick24](https://forums.speedlife.net/u/tnick24)\ **Post date:** [January 28, 2006, 11:57am UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/23 "2006-01-28T11:57:36Z")
> [@Carnut](#): > > wow, that is one destroyed piston, I have some at the shop that top it though 😛 > > That was caused by extremely high cylinder temps. **Either you took too much fuel out** or ran it with too much fuel and not enough timing. Awesome. > > Well at least you have the volvo :tup: bingo :smash2: Basicly, im just retarded. but the car was hella fast before it blew up :bloated: ---
**Author:** ![Studderin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/studderin/32/7197_2.png) [@Studderin](https://forums.speedlife.net/u/Studderin)\ **Post date:** [January 28, 2006, 2:58pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/24 "2006-01-28T14:58:06Z")
pic from top? nice work, 😃 ---
**Author:** ![Pass\_McGass](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pass_mcgass/32/7616_2.png) [@Pass\_McGass](https://forums.speedlife.net/u/Pass_McGass)\ **Post date:** [January 28, 2006, 3:06pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/25 "2006-01-28T15:06:37Z")
> [@tnick24](#): > > the other 3 pistons’s rings were allmost non exsistant and the blocks cyl walls were alllll messed up. my machinest only saved this one for me, or i would have posted pictures of those as well. trust me, the motor detonated/knocked itself to death. but what im getting at is why did anyone take out the knock sensor just to replace the head? if i recall correctly the knock sensor on my 90 tsi was on the back of the block and hella hard to get at. ---
**Author:** ![tnick24](https://avatars.discourse-cdn.com/v4/letter/t/f05b48/32.png) [@tnick24](https://forums.speedlife.net/u/tnick24)\ **Post date:** [January 28, 2006, 3:53pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/26 "2006-01-28T15:53:51Z")
> [@Pass McGrass](#): > > but what im getting at is why did anyone take out the knock sensor just to replace the head? if i recall correctly the knock sensor on my 90 tsi was on the back of the block and hella hard to get at. the knock sensor was “screwed” into the block, and the wire is about 6 inches long, and thats it. The wire gets loomed onto the intake manifold, and im guessing when hybris put the head on, they forgot to re connect that wire. im not trying to blame anyone, but it still sucks my balls. ---
**Author:** ![tnick24](https://avatars.discourse-cdn.com/v4/letter/t/f05b48/32.png) [@tnick24](https://forums.speedlife.net/u/tnick24)\ **Post date:** [January 28, 2006, 3:55pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/27 "2006-01-28T15:55:50Z")
> [@Studderin](#): > > pic from top? > > nice work, 😃 ![http://img.photobucket.com/albums/v110/tnick/paint119.jpg](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/3X/9/8/980d130dd245ff09c1096466054c8ef775d9f590.jpeg) ask and you will recive ---
**Author:** ![Pass\_McGass](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pass_mcgass/32/7616_2.png) [@Pass\_McGass](https://forums.speedlife.net/u/Pass_McGass)\ **Post date:** [January 28, 2006, 4:10pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/28 "2006-01-28T16:10:15Z")
> [@tnick24](#): > > the knock sensor was “screwed” into the block, and the wire is about 6 inches long, and thats it. The wire gets loomed onto the intake manifold, and im guessing when hybris put the head on, they forgot to re connect that wire. im not trying to blame anyone, but it still sucks my balls. i see. for some reason i thought you were talking about it being unscrewed from the block. like, literally taken out of the block. removed from the block…i guess is the central theme of what im trying to get at here. ---
**Author:** ![Studderin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/studderin/32/7197_2.png) [@Studderin](https://forums.speedlife.net/u/Studderin)\ **Post date:** [January 28, 2006, 4:46pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/29 "2006-01-28T16:46:34Z")
now I see what you mean. I asume it has a top coating? lol ---
**Author:** ![JEG](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeg/32/7246_2.png) [@JEG](https://forums.speedlife.net/u/JEG)\ **Post date:** [January 28, 2006, 5:59pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/30 "2006-01-28T17:59:09Z")
HOLY FUCKER! damn dude thats shitty :tdown: ---
**Author:** ![Zer0DazE](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zer0daze/32/7624_2.png) [@Zer0DazE](https://forums.speedlife.net/u/Zer0DazE)\ **Post date:** [January 28, 2006, 7:07pm UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/31 "2006-01-28T19:07:21Z")
wouldnt having the knock sensor unpluged give you a CEL? ---
**Author:** ![tnick24](https://avatars.discourse-cdn.com/v4/letter/t/f05b48/32.png) [@tnick24](https://forums.speedlife.net/u/tnick24)\ **Post date:** [January 29, 2006, 7:41am UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/32 "2006-01-29T07:41:20Z")
> [@Zer0DazE](#): > > wouldnt having the knock sensor unpluged give you a CEL? suprisingly enough no. ---
**Author:** ![tnick24](https://avatars.discourse-cdn.com/v4/letter/t/f05b48/32.png) [@tnick24](https://forums.speedlife.net/u/tnick24)\ **Post date:** [January 29, 2006, 7:41am UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/33 "2006-01-29T07:41:59Z")
> [@Studderin](#): > > now I see what you mean. I asume it has a top coating? lol of oil :biglaugh: and too much gas… ---
**Author:** ![Carnut](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carnut/32/7590_2.png) [@Carnut](https://forums.speedlife.net/u/Carnut)\ **Post date:** [January 29, 2006, 8:18am UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/34 "2006-01-29T08:18:27Z")
> [@tnick24](#): > > the knock sensor was “screwed” into the block, and the wire is about 6 inches long, and thats it. The wire gets loomed onto the intake manifold, and im guessing when hybris put the head on, they forgot to re connect that wire. im not trying to blame anyone, but it still sucks my balls. Slotalons car??? That was connected, he gave us a newer one to put in after the head swap. Someone owned that afterwords im not sure what they did with the car but i can tell you this too. The EGR was eliminated from that car so you would have had hotter cylinder temps. The fact that the ecu subtracts fuel to count for the addition of inert exhaust gas meant that you would not have had to subtract more fuel as it was already done by the ecu…with EGR eliminated that factor was pretty much already there. High cylinder temps and SAFC subtracting fuel = melted pistons…a wideband o2 or EGT would have helped prevent this. lol 🙂 ---
**Author:** ![tnick24](https://avatars.discourse-cdn.com/v4/letter/t/f05b48/32.png) [@tnick24](https://forums.speedlife.net/u/tnick24)\ **Post date:** [January 29, 2006, 8:41am UTC](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403/35 "2006-01-29T08:41:44Z")
> [@Carnut](#): > > Slotalons car??? That was connected, he gave us a newer one to put in after the head swap. Someone owned that afterwords im not sure what they did with the car but i can tell you this too. > > The EGR was eliminated from that car so you would have had hotter cylinder temps. The fact that the ecu subtracts fuel to count for the addition of inert exhaust gas meant that you would not have had to subtract more fuel as it was already done by the ecu…with EGR eliminated that factor was pretty much already there. High cylinder temps and SAFC subtracting fuel = melted pistons…a wideband o2 or EGT would have helped prevent this. lol 🙂 thanks for the info. has inn tune gotten their 2nd set of rollers yet? im gonna leave the tuning to people who know what their doing this time… and yes, this is slotalon’s old car, I bought it from Jtalon. I wonder why he would have cut that wire… the car had been running PIG rich when i first bought it. it was SUCKING down fuel, and had a good bit of black smoke when on the throttle and inbetween shifts. i had to pull fuel when i first bought it because it was breaking up over 3500, that got me home to rochester. hopefully ill have a bit of better luck with my new motor. [Previous page](https://forums.speedlife.net/t/why-you-dont-let-mpd47-drive-your-car/7403.md?page=1)