Air-Water intercooler idea - Page 3

the_underclassman · 11-11-2009, 06:16 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, 06:39 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, 06:57 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, 10:07 AM

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

***03OrangeSVT*** · 11-11-2009, 10:11 AM

Really?????

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

mlbbaseball · 11-11-2009, 10:16 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, 04:25 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, 05:11 PM

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

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

focusmaniaczx3 · 11-12-2009, 06:46 PM

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

11-11-2009, 06:39 AM	#26
focusmaniaczx3 先生滑稽很多 do what? Join Date: Apr 2008 Fan#: 55157 Location: Hickory, NC What I Drive: monster ZX3 aka HONDA KILLER Posts: 4,583 FF Reputation: 28 Buy-Sell-Trade Rating: (9)	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. __________________ Knowing is half the battle of course the other half is violence Time-Out: A disciplinary method designed to ready many of today's youth for where they will eventually need that skill the most.....Prison The pills made me say it!

11-11-2009, 10:07 AM	#28
mlbbaseball SNOWMOBILING 4 LIFE Join Date: Feb 2008 Fan#: 53541 Location: Detroit MI, and Houghton MI, (college), MI What I Drive: 01 zx3 s2 x2, 02 SVT, Jeep Cherokee Posts: 7,830 FF Reputation: 36 Buy-Sell-Trade Rating: (56)	sorry, but tricking the computer doesn't give you more power. __________________ SALE: 3 JRSC zetec SC's, Rally skid plate, s2 spoilers, Tires, Headlights, 65 mm tb duratec (pending), my LAST SVT JRSC w/ BBK and tuning voucher, 3" MAF, 2 zetec/svt turbo kits, built zetec/svt bottom end! PM me

11-11-2009, 10:11 AM	#29
*03OrangeSVT* vvvv My Poker Face Join Date: Feb 2005 Fan#: 19169 Location: Piketon, OH What I Drive: 1 BADASS Turbo'd SVT Posts: 10,950 FF Reputation: 149 Buy-Sell-Trade Rating: (4)	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 VINTAGE 1977 BMW R100/7 ...... Full Dresser 2006 Yamaha Royal Star Tour Deluxe ... Full Dresser I make POWER while you make EXCUSES!!!!!

11-11-2009, 10:16 AM	#30
mlbbaseball SNOWMOBILING 4 LIFE Join Date: Feb 2008 Fan#: 53541 Location: Detroit MI, and Houghton MI, (college), MI What I Drive: 01 zx3 s2 x2, 02 SVT, Jeep Cherokee Posts: 7,830 FF Reputation: 36 Buy-Sell-Trade Rating: (56)	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. __________________ SALE: 3 JRSC zetec SC's, Rally skid plate, s2 spoilers, Tires, Headlights, 65 mm tb duratec (pending), my LAST SVT JRSC w/ BBK and tuning voucher, 3" MAF, 2 zetec/svt turbo kits, built zetec/svt bottom end! PM me

11-12-2009, 05:11 PM	#32
mlbbaseball SNOWMOBILING 4 LIFE Join Date: Feb 2008 Fan#: 53541 Location: Detroit MI, and Houghton MI, (college), MI What I Drive: 01 zx3 s2 x2, 02 SVT, Jeep Cherokee Posts: 7,830 FF Reputation: 36 Buy-Sell-Trade Rating: (56)	well, if it were me, i'd go w/ this one! http://cgi.ebay.com/ebaymotors/1-PER...item4a9a05f161 __________________ SALE: 3 JRSC zetec SC's, Rally skid plate, s2 spoilers, Tires, Headlights, 65 mm tb duratec (pending), my LAST SVT JRSC w/ BBK and tuning voucher, 3" MAF, 2 zetec/svt turbo kits, built zetec/svt bottom end! PM me

11-11-2009, 06:16 AM	#25
the_underclassman Focus Enthusiast Join Date: Jun 2009 Fan#: 66214 Location: Mesquite, NV What I Drive: '98 Blue & '99 Zinc yellow S/R zx2 Posts: 175 FF Reputation: 1 Buy-Sell-Trade Rating: (5)	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, 06:57 AM	#27
the_underclassman Focus Enthusiast Join Date: Jun 2009 Fan#: 66214 Location: Mesquite, NV What I Drive: '98 Blue & '99 Zinc yellow S/R zx2 Posts: 175 FF Reputation: 1 Buy-Sell-Trade Rating: (5)	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, 06:46 PM	#33
focusmaniaczx3 先生滑稽很多 do what? Join Date: Apr 2008 Fan#: 55157 Location: Hickory, NC What I Drive: monster ZX3 aka HONDA KILLER Posts: 4,583 FF Reputation: 28 Buy-Sell-Trade Rating: (9)	omg what a load of BS. how to the people who manufacture advertise and sell these even sleep at night? __________________ Knowing is half the battle of course the other half is violence Time-Out: A disciplinary method designed to ready many of today's youth for where they will eventually need that skill the most.....Prison The pills made me say it!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode