put a long story short i installed a skunk2 manifold yesterday on my 98 gsr and everything hooked up correctly i assume the only thing i was not sure off was on the oem manifold there is the diaphram for the secondaries which does not exist on the skunk to so i capped the vac line going to the canister under the manifold.

Car runs like its bogging and i it makes a whistle type sound when its bogging. idle is a little lower so ill bump up the idle but i know thats not the probem... any suggestions?

thanks

 

did you get your car tuned or chipped? the gsr has a low vtec engagement point like 3300 if I remember right.

 

yes it does have a low vtec but the problem is not Vtec, im waiting for both the IM and TB gaskets to come in.

 

it's 4400 rpm and the stock ecu timing curve isn't really THAT bad. the a/f you can adjust with a scan tool or wideband and an fpr. a few common things people do here that cause problems are

1. not clean all the old gasket off the head.
2. use cheap new gaskets that don't seal
3. not change the TB gasket
4. switch the map and tps plugs
5. not clean the injector bosses or wipe grime off the injectors thus causing another vacuum leak at the injector
6. not tighten the manifold to the head tight enough

you can get a very slight improvement with a chipped ecu that's running a program for the gsr with a single runner manifold. however, i would just use the stock and save my money for a real tune when you get the cams and compression to go with it. an fpr and some way to read AF like mentioned above will have the car running great.

 

btw, what does this mean? you can't do the install without new ones?

 

i used the old gaskets and the problem might be the gaskets so i ordered new ones, hondata style for the IM and oem for TB.

 

there is no way you could ever reuse the old manifold gasket without a leak. 99.9% sure that's your problem. why in the world did you go through the labor of doing this without new gaskets? you should have been able to tell visually they would create a leak

 

not sure if i agree with you on this one, i have reused plenty of gaskets on bikes and cars without problems. The TB gasket was the one that was visually in good condition the IM gasket on the other hand had a tear near the coolant port which i RTV and no leaks however there is a problem. I have to test a few things still but in terms of what is plugged into what yes they are all correct i have the wire diagrams with colors matching the correct sensors and putting the tps sensor on the map sensor the car dies flat on its face past 5% tps. I'm skeptical the issue is the IM gasket but i could and hope im wrong. live and learn if it is the problem.

 

TB you're correct, they can be reused. still for $3 i wouldn't. but the manifold gasket, no way, it heat hardens and tears so easily.

 

your right about the IM gasket i was not expecting it to be as bad so when i put it back together i was hoping for the best.. i really do hope that is the problem.

 

I have the skunk2 manifold to it whistles the same way but my cars running fine.

 

for some reason the TB whistles with this manifold. you can kind of quiet it down if you pull the TB and use a sanding roll on the die grinder to texture the surface. sort of like porting the TB without removing much material

 

good info, you would think a good seal between the gasket would fix this problem.

 

im runng out outlaw gastket kit
no leaks
chipped ecu with s2 intake