Air-Water intercooler idea - Page 3

the_underclassman · 11-11-2009, 07:16 AM

Just a thought here..
Couldn't you just run a resistor in the IAT wire and have it wired to a potentiometer and a switch? That could trick the computer into thinking the air is cooler, thus dumping more fuel in for added power. I know this mod works for zx2 Zetecs, so the Focus Zetec shouldn't be much different.

focusmaniaczx3 · 11-11-2009, 07:39 AM

the car will make peak power when the mixture of air and fuel is perfect. simply increasing the amount of fuel going into the mix will not make more power. however the denser(colder) the air is in the mixture the more fuel is needed to achieve this "perfect" mix which is the purpose of the IAT sensor. it compensates for the density of the air, adding and removing fuel as the air temperature changes to try and keep the mixture in the butter zone. tricking the IAT sensor into thinking the air is denser than it really is will only result in loss of power and fuel economy. any "chips" you have seen advertised as you described are nothing more than a scam.

the_underclassman · 11-11-2009, 07:57 AM

I've found a dyno sheet a member from another site posted pertaining to the potentiometer mod, otherwise known as "pots." Nearly a 6whp and 5wtq gain at 6k rpms is shown:

He set his potentiometer at 28k ohms for the dyno pull.

I may have created a slight confusion with my previous post; only a potentiometer and a switch are necessary for this modification.

In all reality, a good tune would eliminate the purpose of this mod, but it's cheap and effective.

mlbbaseball · 11-11-2009, 11:07 AM

sorry, but tricking the computer doesn't give you more power.

***03OrangeSVT*** · 11-11-2009, 11:11 AM

Really?????

Thats how the basic JRSC is tuned from the factory.... the black box.

mlbbaseball · 11-11-2009, 11:16 AM

ya, except ur boosting, u know that. he's saying just adding fuel adds power, which it doesn't. its like these ebay chips that supposedly give you 50 whp and 20 mpg better.

Randori · 11-12-2009, 05:25 PM

Quote:

Originally Posted by mlbbaseball

ya, except ur boosting, u know that. he's saying just adding fuel adds power, which it doesn't. its like these ebay chips that supposedly give you 50 whp and 20 mpg better.

all for $7.50! If only...

mlbbaseball · 11-12-2009, 06:11 PM

well, if it were me, i'd go w/ this one!

http://cgi.ebay.com/ebaymotors/1-PER...item4a9a05f161

focusmaniaczx3 · 11-12-2009, 07:46 PM

omg what a load of BS. how to the people who manufacture advertise and sell these even sleep at night?

11-11-2009, 07:39 AM	#26
focusmaniaczx3 cave man smash um Join Date: Apr 2008 FF Member#: 55157 Location: Hickory What I Drive: monster ZX3 aka HONDA KILLER Posts: 2,564 FF Reputation: 20 Buy-Sell-Trade Rating: (5)	the car will make peak power when the mixture of air and fuel is perfect. simply increasing the amount of fuel going into the mix will not make more power. however the denser(colder) the air is in the mixture the more fuel is needed to achieve this "perfect" mix which is the purpose of the IAT sensor. it compensates for the density of the air, adding and removing fuel as the air temperature changes to try and keep the mixture in the butter zone. tricking the IAT sensor into thinking the air is denser than it really is will only result in loss of power and fuel economy. any "chips" you have seen advertised as you described are nothing more than a scam. __________________ all stunts i speak of were done by trained drunken professionals do not try to repeat any stunts you hear me talk about any damage done to yourself or your car as a result of trying to copy me is your own fault eat snacky smores

11-11-2009, 11:07 AM	#28
mlbbaseball SNOWMOBILING 4 LIFE Join Date: Feb 2008 FF Member#: 53541 Location: Detroit MI, and Houghton MI, (college) What I Drive: 01 grey zx3 S2, cherokee, 4runner Posts: 5,510 FF Reputation: 30 Buy-Sell-Trade Rating: (37)	sorry, but tricking the computer doesn't give you more power. __________________ 164.4 whp and 144.2 wtq N/A!!! 1/4 in 14.819 @ 96.32 w/ a 2.32 60 ft at 2588 lbs w/ me in the car!! FOR SALE: SVT and zetec intakes, FR head, SVT brake kit, pm me

11-11-2009, 11:11 AM	#29
*03OrangeSVT* Hesten Hane Join Date: Feb 2005 FF Member#: 19169 Location: Ohio What I Drive: 1 BADASS Turbo'd SVT Posts: 9,032 FF Reputation: 133 Buy-Sell-Trade Rating: (3)	Really????? Thats how the basic JRSC is tuned from the factory.... the black box. __________________ 2003 SVT Focus Comp Orange #3474... 362whp/316wtq 2003 SVT Focus Screamin Yellow #1841 .... Bone Stock... almost 1996 SVT Cobra Mystic 1138 of 2000 Mystic's ... 5409 of 7496 Total... 275whp/ 269wtq bolt ons

11-11-2009, 11:16 AM	#30
mlbbaseball SNOWMOBILING 4 LIFE Join Date: Feb 2008 FF Member#: 53541 Location: Detroit MI, and Houghton MI, (college) What I Drive: 01 grey zx3 S2, cherokee, 4runner Posts: 5,510 FF Reputation: 30 Buy-Sell-Trade Rating: (37)	ya, except ur boosting, u know that. he's saying just adding fuel adds power, which it doesn't. its like these ebay chips that supposedly give you 50 whp and 20 mpg better. __________________ 164.4 whp and 144.2 wtq N/A!!! 1/4 in 14.819 @ 96.32 w/ a 2.32 60 ft at 2588 lbs w/ me in the car!! FOR SALE: SVT and zetec intakes, FR head, SVT brake kit, pm me

11-12-2009, 06:11 PM	#32
mlbbaseball SNOWMOBILING 4 LIFE Join Date: Feb 2008 FF Member#: 53541 Location: Detroit MI, and Houghton MI, (college) What I Drive: 01 grey zx3 S2, cherokee, 4runner Posts: 5,510 FF Reputation: 30 Buy-Sell-Trade Rating: (37)	well, if it were me, i'd go w/ this one! http://cgi.ebay.com/ebaymotors/1-PER...item4a9a05f161 __________________ 164.4 whp and 144.2 wtq N/A!!! 1/4 in 14.819 @ 96.32 w/ a 2.32 60 ft at 2588 lbs w/ me in the car!! FOR SALE: SVT and zetec intakes, FR head, SVT brake kit, pm me

11-11-2009, 07:16 AM	#25
the_underclassman Focus Rookie Join Date: Jun 2009 FF Member#: 66214 Location: Mesquite What I Drive: '98 Blue & '99 Zinc yellow S/R zx2 Posts: 15 FF Reputation: 1 Buy-Sell-Trade Rating: (0)	Just a thought here.. Couldn't you just run a resistor in the IAT wire and have it wired to a potentiometer and a switch? That could trick the computer into thinking the air is cooler, thus dumping more fuel in for added power. I know this mod works for zx2 Zetecs, so the Focus Zetec shouldn't be much different.

11-11-2009, 07:57 AM	#27
the_underclassman Focus Rookie Join Date: Jun 2009 FF Member#: 66214 Location: Mesquite What I Drive: '98 Blue & '99 Zinc yellow S/R zx2 Posts: 15 FF Reputation: 1 Buy-Sell-Trade Rating: (0)	I've found a dyno sheet a member from another site posted pertaining to the potentiometer mod, otherwise known as "pots." Nearly a 6whp and 5wtq gain at 6k rpms is shown: He set his potentiometer at 28k ohms for the dyno pull. I may have created a slight confusion with my previous post; only a potentiometer and a switch are necessary for this modification. In all reality, a good tune would eliminate the purpose of this mod, but it's cheap and effective.

11-12-2009, 07:46 PM	#33
focusmaniaczx3 cave man smash um Join Date: Apr 2008 FF Member#: 55157 Location: Hickory What I Drive: monster ZX3 aka HONDA KILLER Posts: 2,564 FF Reputation: 20 Buy-Sell-Trade Rating: (5)	omg what a load of BS. how to the people who manufacture advertise and sell these even sleep at night? __________________ all stunts i speak of were done by trained drunken professionals do not try to repeat any stunts you hear me talk about any damage done to yourself or your car as a result of trying to copy me is your own fault eat snacky smores

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