with this set up can I pass washington state emissions

[boomerr]

I'm kinda new to the whole4g63 thing. I want 300 plus crank hp but I want to keep the boost as low as possible( I know the stock block can take upwards of 25psi).

So I was thinking of getting a fmic,16g big turbo,cams maybe a greddy e-manager or something (don't know from who just yet)and ofcourse intake and exhast, maybe a tubular header.

I know this doesn't follow the prescibed stage 1. But they talk about turning up boost and I fear then I want pass emissions.

In washington the only thing we have to pass is the sniff test and where they read you obd1or 2 sensors.

Any help would be great, thanks Oh and is thier a pacific northwest forum or club thanks

 

[Defiant]

You're not boosting during a sniff test.

 

[boomerr]

true but if I got hks 276/276 cams. would that change my emissions

 

[frontdriver]

You probably wouldn't pass with the cams. Turn up the boost like defiant said.

 

[1LE]

Originally posted by boomerr
true but if I got hks 276/276 cams. would that change my emissions

My 2g passed emissions (Ohio) with HKS 264/264 cams, but anything more aggressive, I don't think it would have passed... Besides, I don't think you will gain much going more aggressive than that on a 16g.

 

[MNGSX]

Originally posted by boomerr
I'm kinda new to the whole4g63 thing. I want 300 plus crank hp but I want to keep the boost as low as possible( I know the stock block can take upwards of 25psi).

I don't know what gen your looking at.

But if it's 2g a 1g head and intake increases airflow. This more air in the motor even on non turbo engines. I'd do a 1g head, intake and throttle body before I did cams. It really outflows a 2g head and intake in the mid to upper rpm but does not effect idle or emmissions. I'd keep the EGR valve as well. When its operating properly it has little very little effect on intake charge temps.

Originally posted by boomerr
So I was thinking of getting a fmic,16g big turbo,cams maybe a greddy e-manager or something (don't know from who just yet)and of course intake and exhast, maybe a tubular header.

Skip the E-manage get DSM link and injectors to match the fuel you want to run. You can get a tubular O2 housing. Skip an actual tubular header unless you are going T3/T4.

Originally posted by boomerr
I know this doesn't follow the prescibed stage 1. But they talk about turning up boost and I fear then I want pass emissions.[/B]

You aren't boosing at idle.

Originally posted by boomerr
In washington the only thing we have to pass is the sniff test and where they read you obd1or 2 sensors.

Any help would be great, thanks Oh and is thier a pacific northwest forum or club thanks [/B]

If you do it right it will have less emissions.

Skip the 274's for now. Do some research on cams. Search button. The exact grind for intake and exhaust is usually based on turbo size. I don't think a 274 exhaust cam would be good with a 16g. Find someone who has the nicest all around car..combination of... cleanest, fastest, most relible with that turbo duplicate their cam selection.

Big cams will effect emissions. That is the one thing you mentioned that will. An engine with a t-25 and a 20g will idle the same all things (FI systems) being equal. It just sits their at low RPM with the 02 sensor in closed loop and the turbo barely spinning as the engine is mostly sucking thru the compressor.

Apart from compressor surge, which wont happen on 16g or 20g but bigger there are no differences for idle emissions tuning caused by a turbo upgrade. Running bigger injectors without EMS or good piggyback tuning will. Just having a mid sized upgrade turbo and stock injectors it will idle exactly the same and have exactly the same emmisions. When you get to runing that bigger turbo at higher boost levels you will need injectors, fuel pump and adjustable EFI of some kind to lean the idle and part throttle back out to pass.

But lopey cams are hard to get good emissions out of without alot of tuning with a good EMS. I got to pass a sniffer here. I'll do ok with cams due to EMS and the fuel I'm running.

Really big cams will require head work like race valve springs to tolerate the increased lift and duration at high RPM. Stock springs can fatigue. They can also float valves. This is where the valvesping isnt strong enough to keep the valve in check with the lobe lift. You can smack a piston with a valve this way.

 

[boomerr]

Thanks for the reply mngsx here's another question for ya.If I stroke the 4g63 can I still pass emissions, this is ofcourse will the other list of modds.

Thanks for all the help. I'm in the process of getting eithier a talon or eclipse. After I get the car I'll have a good chunk of cash left over. With all the question that all of you have answeared I'll be able to go fast and still pass emissions.

My over all goal is a 13.5 the quarter mile(atleast or better) and a good and competitve autocross car.

 

[MNGSX]

If you go stroker I'd get fuel system and engine mangement upgrades at the same time. Factory closed loop narrow band o2 fuel control should actually be able to idle a 2.4 good enough to pass. Just to be on the safe side you want to be able to compensate for the displacement increase if you have to.

 

[XTurboSpYderX]

uummm... where the hell in Washington are you? I have lived in Washington for 24 years and had never seen a Wash. state emissons test...

 

[boomerr]

If you live in king or pierce county you have to get an emissions every two years

 

[XTurboSpYderX]

sux to be yal...

 

[turbowop]

Originally posted by XTurboSpYderX
sux to be yal...

No crap....I'm glad I live on the east side of the Cascade Mts.

If all you want is a 13.5 or a little better you won't need cams let alone a stroker. Just make sure you have a cat and you should pass just fine.

 

[NDgsx]

Originally posted by boomerr
If you live in king or pierce county you have to get an emissions every two years

Get a PO box in Carnation or Duvall, no emissions for me

You want to run a 13.5? Full 2.5 or 3" exhaust, highflow air filter, 190lph fuel pump, boost at 14-15psi (log it to make sure it's not knocking of course), and the job is done. Assuming it's a 1g.

HKS 272s do NOT eight stroke (rhythmic miss you get at idle with cams that have large overlap) at all. They won't pull quite as much vacuum at idle, but they don't lope. If they do then your cam timing is off due to a excessively milled head or block. Degree them.

As for emissions my friend Matt passes every year with a B16g, 221 fmic, 2.5" piping, 2g mas, 550s, supra pump, sx regulator, afc, lightly ported head, HKS 264s, evo o2 housing, and a 2.5" turbo back. He puts a cat in for emissions.