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topic #60577

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Subject: "Having problems at 4-5k under boost"

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Snail_GS	Nov-12-03 08:01 AM
Member since Jun 07th 2002 266 posts,

#60577, "Having problems at 4-5k under boost"

while driving when I get on it between 4-5rpm the car bogs/stutter but if I were to slowly go faster I get no problem but before and after the car pulls. Right now im running the car with just downpipe no cat back @ 5psi, vortech FMU and, with Hahn's Black box

I could really use anyones opinion on what could be wrong
Thanks

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Replies to this topic

RE: Having problems at 4-5k under boost, davo345, Nov-12-03 09:14 AM, #1

RE: Having problems at 4-5k under boost, Uberingram, Nov-12-03 10:21 AM, #2

RE: Having problems at 4-5k under boost, Snail_GS, Nov-12-03 10:34 AM, #3

RE: Having problems at 4-5k under boost, davo345, Nov-13-03 04:41 AM, #4

RE: Having problems at 4-5k under boost, Team

etx, Nov-13-03 07:26 AM, #5

RE: Having problems at 4-5k under boost, DSMRoadster, Nov-13-03 09:26 AM, #6

RE: Having problems at 4-5k under boost, Snail_GS, Nov-13-03 11:31 AM, #7

RE: Having problems at 4-5k under boost, davo345, Nov-13-03 01:25 PM, #8

RE: Having problems at 4-5k under boost, Team

etx, Nov-17-03 04:30 AM, #9

RE: Having problems at 4-5k under boost, gilee_8, Nov-17-03 07:26 AM, #10

RE: Having problems at 4-5k under boost, Snail_GS, Nov-17-03 05:53 PM, #11

RE: Having problems at 4-5k under boost, gilee_8, Nov-17-03 06:03 PM, #12

davo345	Nov-12-03 09:14 AM
Member since Jul 15th 2003 510 posts,

#60580, "RE: Having problems at 4-5k under boost"
In response to Reply # 0

it could be the infamous black box. get the missing link to eliminate that possiblity.

bobin' and weavin' in traffic. No other place i'd rather be emoji .

^^^^^EVERYTHING HAS TO GO.

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Uberingram	Nov-12-03 10:21 AM
Donating 2GNT member 10001 posts,

#60581, "RE: Having problems at 4-5k under boost"
In response to Reply # 1

Check your plugs and wires too. Just to be sure

__________________________________________
~Chris
03 SRT-4

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Snail_GS	Nov-12-03 10:34 AM
Member since Jun 07th 2002 266 posts,

#60582, "RE: Having problems at 4-5k under boost"
In response to Reply # 2

I have new NGK's and I swapped out wires with my friend new MSD wires and I get the samething...keep it coming guys I could use your help.

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davo345	Nov-13-03 04:41 AM
Member since Jul 15th 2003 510 posts,

#60622, "RE: Having problems at 4-5k under boost"
In response to Reply # 3

make sure that your plugs are gapped appropriately.

bobin' and weavin' in traffic. No other place i'd rather be emoji .

^^^^^EVERYTHING HAS TO GO.

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etx	Nov-13-03 07:26 AM
Donating 2GNT member 9740 posts,

#60627, "RE: Having problems at 4-5k under boost"
In response to Reply # 4

Yeah, gap your plugs to .29-.32 and check your coil pack. Chances are its just that hahn black box. Mine only worked for about 2 days, is it doing it around 0-1 psi of boost? or only at that rpm?

____________________________________________________
four nails four corners four riders and four horses

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DSMRoadster	Nov-13-03 09:26 AM
Donating 2GNT member 3445 posts,

#60637, "RE: Having problems at 4-5k under boost"
In response to Reply # 5

replace the pcv check valve.

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Snail_GS	Nov-13-03 11:31 AM
Member since Jun 07th 2002 266 posts,

#60644, "RE: Having problems at 4-5k under boost"
In response to Reply # 6
Nov-13-03 11:32 AM by Snail_GS

Only seem to happen between 4-5krpm, I do need to check on the gap of the plugs...I use NGK BE6blah??? are they not already gap .29?

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davo345	Nov-13-03 01:25 PM
Member since Jul 15th 2003 510 posts,

#60658, "RE: Having problems at 4-5k under boost"
In response to Reply # 7

Originally posted by Snail_GS
Only seem to happen between 4-5krpm, I do need to check on the gap of the plugs...I use NGK BE6blah??? are they not already gap .29?

they could be gapped .29, but NGK BE6blah's are new to me :o . be a little more specific and we might be able to tell you! i still say get rid of the black box of death and purchase the missing link

bobin' and weavin' in traffic. No other place i'd rather be emoji .

^^^^^EVERYTHING HAS TO GO.

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etx	Nov-17-03 04:30 AM
Donating 2GNT member 9740 posts,

#60813, "RE: Having problems at 4-5k under boost"
In response to Reply # 8

No! The NGK BKR7e11's are not gapped properly for turbo. Always check your plug gap before installing them. Every bkr7e11 I have ever gotten was gapped to about .4.

So I just had a similar problem last week and it ended up being my coil pack. At about 12-14 psi the car would make a machine gun type noise, I figured the boost was blowing out my spark. Replaced the plugs and wires, it helped a little but not much, so i knew it was an ignition issue. I got the MSD Blaster coil replacement and the car is happy now.

____________________________________________________
four nails four corners four riders and four horses

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gilee_8	Nov-17-03 07:26 AM
Member since Jun 11th 2002 1441 posts,

#60821, "RE: Having problems at 4-5k under boost"
In response to Reply # 9

hi i want to know how i can change the gap of the spark plug? thanks

ever since i go to turbo i never change my NT spark plug..... do i have to? i got the bosch platinum +4 type.

thanks!

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Snail_GS	Nov-17-03 05:53 PM
Member since Jun 07th 2002 266 posts,

#60850, "RE: Having problems at 4-5k under boost"
In response to Reply # 10

I was told ^^^^ type of plugs are no good for our car *under boost* but I really dont know.

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gilee_8	Nov-17-03 06:03 PM
Member since Jun 11th 2002 1441 posts,

#60851, "RE: Having problems at 4-5k under boost"
In response to Reply # 11

Damn...so what plug should I get?
can anyone giveme osme input on this ?
THanks
GIl

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