I just got my motor in and running last night. I have a stock intake on and it's vaccum leak heaven.

So i got up this morning and purchased a brand new skunk2 intake manifold. Say's its for obd2 and what not. I talked to a friend though and he said i am going to need to get a obd1 p72 with step down so i don't throw a code.

I was also told that i won't throw a code because it's the new intake model and it's made for obd2.

So will i throw a code or not? My buddy says yes because a couple sensors are going to be eliminated. I don't see why they would be eliminated though if the intake is made for the car etc.

 

you my not throw a code but the stock ecu is going to be looking for the secondary butterflys. And its going to run like poop. If im not mistaken

 

your problem is the fuel map. that manifold will work fine obd2a if you can get your hands on a p73 ecu. or if you go obd1 the ecu needs to be chipped since your fuel & timing need to be fixed for the single runner manifold. p72's have more fuel and less timing down low, the reverse of what you need. also you have the butterfly dip. buy a USDM p73 or the right chipped ecu for your app.

 

What about a p2t? a obd2 si computer?

 

a b16 map just isnt going to run a GSR right

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Horseofcourse &raquo;</TD></TR><TR><TD CLASS="quote">a b16 map just isnt going to run a GSR right</TD></TR></TABLE>

--- Only reason why i brought that up is because my buddy has 2 SI computer's laying around. Save myself some money since i am on budget. My other good friend has a 1998 ITR. He sold the motor a while ago and just sitting on the shell. I guess i can ask him if i can use his computer. Either way. I think the SI would be better than the gsr, but the ITR ecu would top them all.

 

I had a local acura mechanic shop instal a sk2 pro series im on my 98'' gsr and it had basic carb leagal bolt on's header, intake, exhaust ect. and it ran fine on my stock ecu i then upgraded to a 68mm tb later down the road and lots more before i tuned it. im not sure what they did but its posible

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wunfstgsr &raquo;</TD></TR><TR><TD CLASS="quote">I had a local acura mechanic shop instal a sk2 pro series im on my 98'' gsr and it had basic carb leagal bolt on's header, intake, exhaust ect. and it ran fine on my stock ecu i then upgraded to a 68mm tb later down the road and lots more before i tuned it. im not sure what they did but its posible </TD></TR></TABLE>

--- I need to get the car inspected and salvage to r title. So after they installed the intake, did it throw a code for the secondaries? If so, what did they do to eliminate the CEL?

TBH. I Hate Skunk2 products, i really regret buying it already but it is a MUST DO purchase. I didn't have time to look around or wait around for something i wanted. Once everything is in running order i am for sure going to take this off :D I don't know why i don't like their products, i just was always against them and don't want to rep. their parts.

 

hate skunk2? hmm..duno, never used any of their stuff yet. were you just needing a stock GSR manifold? i have a spare i would love to get rid of on the cheap. just put it on ebay for $24.95 BIN the other day

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by idrivesideways &raquo;</TD></TR><TR><TD CLASS="quote">hate skunk2? hmm..duno, never used any of their stuff yet. were you just needing a stock GSR manifold? i have a spare i would love to get rid of on the cheap. just put it on ebay for $24.95 BIN the other day</TD></TR></TABLE>

--- I have stock intake on it now. It has a few vacuum leaks so instead of fusing with he 1 million hoses and all. I just bought a new intake. I honestly have about 4 stock gsr intakes laying around lol. This single stage skunk2 will eliminate the stupid little problems i am having. I haven't had a car for the last 3 months and it's getting to become tiresome driving my girls SI or bugging her to drive me around. Getting in way to many argument's and it's putting a huge stress on my relationship. So instead of wasting time on trying to get this @ 100%, i will eliminate the stupid manifold and just fix it like that.

I ran into the vacuum problem, some coolant leaking from intake/right beneath it, rpm tach not working at all, and i think my input shaft or throw out bearing is bad in the tranny. /sigh...

Just don't wanna throw any codes for inspection. I could just get a lick and stick, but since i just put the car together i want it to be legit for the first one since i have owned the car.

 

....

 

u can put the skunk 2 intake mani on with no probs, and run the stock ecu with no check engine lights, u just have to plug in the vacuum bypass control solenoid back into the harness and let it hang under the manifold its #6 in this diagram, that way the stock gsr ecu will still think its opening the butterflies, it does not need to be hooked back up to a vacuum source with the skunk 2 intake mani

also the egr purge solenoid will have no where to mount, #5 on the diagram, i just mounted mine on the firewall and routed a new vacuum hose up to the manifold, I think u also have to lengthen the wires for the iac and iat if i remember right. u should not have any left over sensors when the install is finished, everything has to be hooked back up to keep from throwing codes

keep in mind like these other guys said, it will have a bog from like 4400 to like 5500, but that wont affect emissions, and its nothing a chipped ecu cant fix later on down the road





Modified by JRSC01GS-R at 10:29 PM 9/4/2008

 

Thanks a lot JRSC01GS-R. My buddy is swearing to his life that it would throw a code, but maybe he just always did it incorrectly. Gonna print this diagram up and show it to him.

Emission's is my main concern. I need it to pass inspection and also pass the review for the salvage to r title session. I will worry about getting the bog rid of later. I will most likely use a obd1 p72. Whatever.

 

It wont throw a code if you install it correctly. It runs sh!tty with the stock ecu though. I had mine on with my stock ecu for a week until I tuned it with a p28 (way better from 5000rpm+) but you dont feel that low end anymore

 

Think i stated it before. Only reason why i purchased is because i wanted to eliminate that problematic stock intake. After installation i had too many vacuum leaks and antifreeze was leaking from around the gasket. I got a brand new skunk2 intake for 150shipped, so just took the deal to eliminate that stock one.

I have to admit though, i really love how the stock one looks. Guess i have to deal with the shitty running quality until i get that new ecu. I think i am going to just use a P2T (SI) ecu to save myself some money until i get the rest of the small crap i want for the car. I think/hope that ecu will run the engine better than the p72 (GSR) ecu will.

Was going to use my friends P73 ecu, but he told me his ITR was 01. I was under the impression it was a 98.

 

Going to trade my OBD2a P72 for a OBD2b P73 tomorrow. Epic Tuning a local/reputable shop is going to trade me even up since they need it for one of their builds there ASAP. I already have the step up, so hopefully this will eliminate the low end power loss. Since the ecu will not be looking for the secondaries, i guess i can eliminate that vacuum all together.

How would the vacuum diagram look running that single stage skunk2 mani, with the p73 ecu? Since it will be looking for less sensors.

 

u will run into issues with your car with a obd2b ecu because they all have a key immobilizer built in, supposedly u can take the car to the dealer and they can make a new key for u, but since your car is obd2a and doesnt have the chipped key from the factory, u may want to look into that before you commit yourself to the trade, a obd 2a p73 ecu would be a better option for u if u can source one as they dont have the key immobilizer

good luck

 

you need a usdm a03 model p73 from the 98-99 car. not the most common ecu in the world. however, you might be in luck. i have one, the problem is, i can't get off it for a month or so. that combo will run on your p72, you just might not pass because the car will be rich in the lower rpm range. those obd2b ecu's are a nightmare unless you know what you're doing. read the post above me, that guy is spot on. don't get it. you want the p73-a03, not a04

 

Just traded the ecu's. It is a CTR ecu. That doesn't have a immobilizer on the ecu. So i don't have to worry about that now.

 

Well I can actually give you positive feedback on the skunk2 intake manifold. I have a 97 integra rs with a swapped 98 gsr motor. I bought the skunk2 intake manifold a few months ago. I ran stock with just a S2IM on a stock obd2a p72. It never threw a code for me. But it does hesitate when your ecu looks for the secondary butterfly. But your vtec will still hit just a slight hesitation. I also consider getting the p73... but i winded up getting a p06 converted to p28 settings running a itr setup just with lower vtec engagement and also lower rev limit. It works great. my $0.02 on the discussion

 

CTR as in JDM? all those use crank sensors in the dizzy if i remember right. not compatible with i don't know how many USDM parts & sensors. steve at hmotorsonline has this stuff memorized if you give him a ring.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by idrivesideways &raquo;</TD></TR><TR><TD CLASS="quote">CTR as in JDM? all those use crank sensors in the dizzy if i remember right. not compatible with i don't know how many USDM parts & sensors. steve at hmotorsonline has this stuff memorized if you give him a ring. </TD></TR></TABLE>

--- CTR as in JDM PCT ecu. I talked to the people at the shop and they said it should work fine. I guess is won't hurt to call up hmotorsports' lan line and get another opinion.

 

ask about the crank position sensor and the harness wires. the CPS and lack of being able to use a scan tool were the two biggies that i remember about JDM ECU's

 

I was reading up on the cps and i know it has to deal with timing and all. what kind of damage am i looking at if any? I don't want to use this ecu if it is going to blow up my car in any type of way. They said the customer is picking up the car on tuesday so i have until then to bring it back and get my old one.

 

There is that rug rat i picked up.

EDIT:

Got the manifold in the mail yesterday. You can kinda see it in the picture.