Ok I have a 98 Civic with a D16y8 head, D15b7 bottem end, and the Edelbrock Turbo kit. Heres my problem I had wired in the ecu and found out that I need a voltage clamp from Edelbrock. The voltage clamp goes inline with the MAP sensor.

I haven't installed said voltage clamp yet, because I'm waiting for it to come in shipment. I have already started the car... it runs like crap. It honestly doesn't even feel like a turbo'd car, barely pulls at all. Could the MAP sensor really have this much effect on the engine?

I have searched and didn't find any results relating to my problem any help would be great.

 

All I really want to know is: can a MAP sensor map my car run like complete crap?

 

is it stock map sensor? and what boost level are you running/ are u tuned at all?

if your not tuned stop what ur doing and dont go driving around untuned.. especially trying to see if it pulls

 

tune x2...........any cels?........i heard you're supposed to have a "missing link"/check valve for the map sensor...and in some cases more than one check valve. I do alot of reading and somewhere on here, homemadeturbo.com, or turdod16 i read you need the "missing link"/check valve for the map sensor.

 

Its the stock map sensor, its getting 7 psi, and the Edelbrock Kit comes with a pretuned piggyback.

Basically, when I start the car it automatically rev up to 4 grand then back down. Once its done doing that it surges starting at 11 hundred to about 3 grand. That won't stop until drive it around then it would still surge, but not as bad.

 

Yea I called a shop, they mentioned something about the "missing link" and said this voltage clamp would do the same thing. I do have a CEL, but it came on when the turbo spooled up seconds after I started the car (after I reset the ECU).

 

Has anyone had the same problem as I have?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Carbonciv &raquo;</TD></TR><TR><TD CLASS="quote">Has anyone had the same problem as I have?</TD></TR></TABLE>

Yeah I did many moons ago. It ended up being that the car was running way too rich. But that shouldn't be the case for you b/c of the fact that you are only running a piggy back. Check for vacuum leaks. Fix that idle problem, get a missing link, check valves, aquarium valves, voltage clamp for now and it should run fine. But get rid of that **** in the long run b/c all its really doing is fooling the map sensor into not seeing boost. Right now the ECU is reading boost and cutting the timing and dumping the fuel b/c it doesn't know what the expletive to do with itself under boost. Get it tuned with Honcrapa or Chrom and get a boost map for the bitch, set the a/f, timing, and go have fun.

 

Finely, someone confirmed what I was thinking. I just wasn't sure if the map sensor could cut the timing or not.