Just got a new intake manifold and got it on and my car and now having idle problems jumps between 1100 and 1500 rpm like it has a vacuum leak 1700 rpm and up car runs grate but every time i ajust the idle to mach and hit the throttle the idle just takes off and holds at 3500 rpm and its just the defferents of a 1/8 turn of the ajuster that just it ????

car has a new T.P.S. and ran grate befor

Did you adjust your tps sensor when installed? Did you get new gaskets and seals? And check if you have any leaks from your hoses.

like i said the car run grate befor the TPS is fine its not my frist rodeo and thares no leaks i just got a newer IACV from ebay and ill see if that helps i dont think the old one lines up right could just be this cheap intake

The newer I.A.C.V. dident help "May just be to wild an intake!!!" going to keep fighting it

Calibrating the TPS has absolutely nothing to do with how "great" it ran....before. Anytime a TPS is removed, it has to be calibrated. Just FYI.

Car ran like new even drove it to work a few times with no prob.

"Heres the deal every one i got this car with a blown motor 2 months ago it come with a spare d16a6 so i did what any tuner/hot rodder dose i put it in had to use the smaller HF intake for a week or 2 becuse the Si T.P.S. was broke so i got one put it on tuned it out car ran grate now this is my 4th civic and my 8th honda so im not new to this now i got this intake becuse iv never had time or the money to get one its just a cheap ebay off brand so iv had to cut, grind, and drill all most every part so im not at all in shock that im having trouble now its not the T.P.S. so start thinking of what els it can be"

To make you all happy i went out the other day and tweeked with the T.P.S. and all it did was make it run worse and had to put it right back ware i had it to start i realy just think its to big for the stock motor and trying to draw in to much air but like i said im going to keep playing with it

lesson learned...dont buy cheap shit off ebay.. my advice- put ur old IM on and sell that ebay one

I get a lot of stuff from ebay better for me to buy cheap crap at 1/4 the cost and spend a week making somthing nice out of it gives me somthing to do I knew going in it was going to be trouble the intake its self is sound just some of the bolt holes had to be drilled out and one throttle body bolt hole was 1/2in off and the welds on the monting flange to the head had to be ground down to make room for the bolts other thin that its not a bad part like I said just to wild an intake if i was building a full race motor id get another one "In any case its now down to jumping between 1000-1200"

Some pics from early on

One More

All right guys and gals I got this POS to work and work good this is what to do


1. Check all bolt holes to make shere thay line up. (TEST FIT)
"May need to drill out or make new holes becuse of miss punchs"

2. Ground down the welds on the mounting flange to the head to make room for the bolts. (TEST FIT)

3. You may need to add a vacuum tap or two the one I got only had two 1/8 and two 3/8.
"I needed more 1/8 vacuums so I got a 3/8 tap and a vacuum block"

4. Use a M8 thread hole tap and go over all threaded holes to clean thim out.
"This will save you time later all the thread on mine where ruff"

5. Use sealer around all sensors becuse thay may not seal ageinst the ruff intake.

6. Use sealer on the intake side along with your intake gasket to make a good seal when you bolt it up.
"This was my problem the intake is ruff all over and must of been seeping air around the gasket"

Also as a note on a 88-91 civic/crx you will need to unbolt your master cylinder to get this intake to fit

good to hear ya got her goin

Thanks