Taking off the Smog, HP Gains??

5.0 Pony · 01-16-2003, 11:10 PM

How much HP gain would i be looking at in taking off all of the smog stuff, including the air pump which i know is robbing hp from the crank.

Bad89stang · 01-17-2003, 12:52 AM

Not as much as you think. If you have emmisions testing, it is really not worth the hassle of installing and removing every year. Just run a short belt if you are really worried about it.

HiFlow5 0 · 01-17-2003, 07:57 AM

You will not gain any power to make an any type of noticeable difference. The smog pump is pretty much a free wheeling pulley anyway so no gains there. You would benefit from bypassing the AC compressor and the power steering pump, those do rob some power!

PKRWUD · 01-17-2003, 08:16 AM

Not to mention, if you still have cats, they will clog solid without the smog pump.

Take care,
~Chris

DemonGT · 01-17-2003, 08:19 AM

you will not notice anything..a freind of mine had the right lenght belt to bypass the smog pump and sold it to me cheap and put it on..we went for a ride afterwards and he was like "MAN YOU FEEL THE DIFFERENCE!!??" i was like...uhhhhhh sure...but i was thinken "no...not at all ...this guys a slap stick"

mpj76 · 01-17-2003, 08:38 AM

So about how long does it take to clog the cats up? I've been driving my car for about a year now w/o the smog pump. I'd assume that I wouldn't notice a gradual loss of power. Should I expect a moderate gain by installing a off road H-pipe?

PKRWUD · 01-17-2003, 08:50 AM

Quote:

Originally posted by mpj76
So about how long does it take to clog the cats up? I've been driving my car for about a year now w/o the smog pump. I'd assume that I wouldn't notice a gradual loss of power. Should I expect a moderate gain by installing a off road H-pipe?

I've seen them clog in less than 3 months.

Dark_5.0 · 01-17-2003, 09:29 AM

My cats were clogged on my 88 vert a while back. I bought an O/R X-pipe and from a 15.2 @88mph to a 14.79 @93mph.

bigred90gt · 01-17-2003, 10:11 AM

The only way, from what I understand, to get any gains from eleminating the smog pumi is to take it out. The pump and all associated plumbing would be a weight issue more than anything.

Caymon

ChunkFunky · 01-17-2003, 10:16 AM

if the AC clutch isnt engaged it shouldnt be robbing of any more power then the smog pump, right? if you're racing with your AC on, then that's a different story... though I would imagine a good weight reduction if you removed the compressor entirely
-as

mpj76 · 01-17-2003, 10:28 AM

I think that the AC clutch is automatically disengaged by the computer at WOT. I heard this somewhere before and my AC stops blowing cold air in my car at WOT. Either thats proof that what I heard is true, or maybe I have a gremlin in my AC system.

ChunkFunky · 01-17-2003, 10:41 AM

You're right, I'm going to back you on that one... I've been driving around in the summer and floored it to pass or somerhing and it starts blowing hot air for a couple seconds... so I would have to agree that, that is the case
-as

01-16-2003, 11:10 PM	#1
5.0 Pony Registered Member Join Date: Jun 2002 Location: Nebraska Posts: 127	Taking off the Smog, HP Gains?? How much HP gain would i be looking at in taking off all of the smog stuff, including the air pump which i know is robbing hp from the crank. __________________ 1988 Mustang 5.0 LX Convertible -Mac Cold Air Intake -K&N Cone Filter -9mm FMS Spark Plug Wires -Hedmann Headers 2.5" O/R H-Pipe -Flowmaster 40 series 2.5" Catback

01-17-2003, 12:52 AM	#2
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	smog Not as much as you think. If you have emmisions testing, it is really not worth the hassle of installing and removing every year. Just run a short belt if you are really worried about it.

01-17-2003, 07:57 AM	#3
HiFlow5 0 Registered Member Join Date: Mar 2000 Location: Springfield, Ma, usa Posts: 706	You will not gain any power to make an any type of noticeable difference. The smog pump is pretty much a free wheeling pulley anyway so no gains there. You would benefit from bypassing the AC compressor and the power steering pump, those do rob some power! __________________ NewEngland Auto www.baystategearheads.com -91 Mustang Coupe, ex 4cyl (sold) -99 F150, 3" lift, 35" Procomps, Magnaflow exhaust

01-17-2003, 08:16 AM	#4
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	Not to mention, if you still have cats, they will clog solid without the smog pump. Take care, ~Chris __________________ Webmaster: Rice Haters Club Jim Porter Racing Peckerwoods Pit Stop Support Your Local RED & WHITE!

01-17-2003, 08:19 AM	#5
DemonGT Registered Member Join Date: Aug 2000 Location: Wisconsin Posts: 879	you will not notice anything..a freind of mine had the right lenght belt to bypass the smog pump and sold it to me cheap and put it on..we went for a ride afterwards and he was like "MAN YOU FEEL THE DIFFERENCE!!??" i was like...uhhhhhh sure...but i was thinken "no...not at all ...this guys a slap stick" __________________ '91 GT,410W,10.5 to 1 comp,Victor Jr. heads,Victor 5.8 intake,FTI cam,Crane retro fit lifters,Scorpian 1.6 RR's,Melling HV oil pump,MSD distro.,Canton oil pan,FMS flywheel,Romac balancer,FMS timing chain,Accufab 90mm TB,C&L 76mm maf, 42lbers,HD clutch,K&N air filter,Mac long tubes,Pro dumps,powerchamber,FMS 9mm wires,180 thermostat,Ford Racing gauges,5inch Tach,centerline convo pro's,nitto DR's,Pro3i lower control arms,50/50 shocks,3.55 gears,TFS HD diff. cover Next year: Tremec TKO,Spec stage 3 clutch,alum driveshaft,complete fuel system www.angelfire.com/linux/demondan

01-17-2003, 08:38 AM	#6
mpj76 Registered Member Join Date: Sep 2002 Posts: 158	So about how long does it take to clog the cats up? I've been driving my car for about a year now w/o the smog pump. I'd assume that I wouldn't notice a gradual loss of power. Should I expect a moderate gain by installing a off road H-pipe?

01-17-2003, 09:29 AM	#8
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	My cats were clogged on my 88 vert a while back. I bought an O/R X-pipe and from a 15.2 @88mph to a 14.79 @93mph. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

01-17-2003, 10:11 AM	#9
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	The only way, from what I understand, to get any gains from eleminating the smog pumi is to take it out. The pump and all associated plumbing would be a weight issue more than anything. Caymon __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

01-17-2003, 10:16 AM	#10
ChunkFunky Registered Member Join Date: Apr 2002 Location: Tustin, CA Posts: 465	if the AC clutch isnt engaged it shouldnt be robbing of any more power then the smog pump, right? if you're racing with your AC on, then that's a different story... though I would imagine a good weight reduction if you removed the compressor entirely -as __________________ '89 GT Convertible: TFS TW Heads, TFS Street Intake, TFS Stage 1 Cam, FMS 1.6 RRs, 24# Injectors, Pro-M 75mm MAF, No Name CAI, 3.73s, O/R H-Pipe, FlowMasters, AOD w/ Trans-Go Shift Kit

01-17-2003, 10:28 AM	#11
mpj76 Registered Member Join Date: Sep 2002 Posts: 158	I think that the AC clutch is automatically disengaged by the computer at WOT. I heard this somewhere before and my AC stops blowing cold air in my car at WOT. Either thats proof that what I heard is true, or maybe I have a gremlin in my AC system.

01-17-2003, 10:41 AM	#12
ChunkFunky Registered Member Join Date: Apr 2002 Location: Tustin, CA Posts: 465	You're right, I'm going to back you on that one... I've been driving around in the summer and floored it to pass or somerhing and it starts blowing hot air for a couple seconds... so I would have to agree that, that is the case -as __________________ '89 GT Convertible: TFS TW Heads, TFS Street Intake, TFS Stage 1 Cam, FMS 1.6 RRs, 24# Injectors, Pro-M 75mm MAF, No Name CAI, 3.73s, O/R H-Pipe, FlowMasters, AOD w/ Trans-Go Shift Kit

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