Warm air intake

[Magician]

I put a WAI on both of my daughter’s Civics. I put a pic of one of them below.

[Magician]

Well... I’ve seen a solid 10% mpg gain from adding warm air intake on both of my daughter’s 2001 & 2003 Civic LX. Very effective way to get a gain in mpg’s I’d be willing to say most any car would benefit from it.

[Magician]

My fuel tank rusted out and started leaking and I just purchased a new one. I want to share this with other 92-95 Civic hatchback owners. I bought a Spectra Premium fuel tank H09. It fits and is a 10 gallon tank. The specifications say it is a 13.5 gallon tank and I know it’s only a 10 gallon tank. I have seen online where others stated the specs were wrong and I’m confirming it fits and is only a 10 gallon tank. Got it at O’reilly auto parts and the other person who said this same thing bought theirs online... so the manufacturer has their specs wrong.

[Magician]

Well everyone...I mis-spoke. The tank is a 13.5 gallon tank. It didn't look any bigger and fit just fine. I'm a bit perplexed as they were side by side when I took the old one out. Must have been an Illusion that even fooled this magician.

I just filled up and it is the size they stated on the specs.

Good news is I will now be able to drive between 715 and 880 miles per tank... depending on if it's Winter or Summer.

900 miles on a tank will be my new goal next Summer with this larger tank

[teoman]

I have ben thinking about this for my 1.8 tsi Passat.

Would I see any downsides on a turbo car?


Currently it is about 13deg C outside. While cruising I observe 16 deg C. While in traffic or idling it goes up to approx 50 deg C.

I am observing the advance with torque pro app but I am not able to visually determine if advance is being retarded. Anyone have any ideas on what kind of experiment I should run?

Also should I attempt an adjustable wAI that keeps the temp at a fixed temperature? Or am I better off blocking the inter cooler?

[cRiPpLe_rOoStEr]

Originally Posted by teoman

I have ben thinking about this for my 1.8 tsi Passat.

Would I see any downsides on a turbo car?

I would be more concerned about the direct injection than the turbo. But maybe it could actually improve the complete vaporizing of the gasoline and lead to a smoothier cold start.

Also should I attempt an adjustable wAI that keeps the temp at a fixed temperature? Or am I better off blocking the inter cooler?

Either blocking or bypassing the intercooler might suffice.

[teoman]

Bypassing would require a bit too much piping for my taste.

Will have a go at blocking the intercooler.

I wonder where the intake temp sensor is, before or after the intercooler.

[cRiPpLe_rOoStEr]

I'm not sure if it also has a temperature sensor before the intercooler, but it certainly has one after.

[slime]

Smokey Yunick was working on a warm air intake system when he died... I may have to do some testing on the MX-6 but it's too cold to drive it right now! LOL

[DSMHondaGuy]

Not just older light aircraft, some older engine designs had the intake and exhaust manifolds on some straight 6 engines bolted to one another to transfer the heat for better atomization of the fuel.

Check out the PMD straight 6's for example. (Pontiac Motor Division) John DeLorean (yeah that one) designed the first mass produced OHC engine and did this. Both the intake and exhaust where on the same side of the head.

I actually habe one of those engines, came out of a 1966 Pontiac LeMans Sprint 6.

P.S. Smokey Uniqe (I think I spelled that right) famous old NASCAR racer did similar modifications and even injected fuel into the compressor side of a turbo on a modified Pontiac Fiero and got crazy mileage and a power boost.

The downside to injecting fuel into the compressor side is the same as water injection pre turbo. Compressor erosion, it's a real thing and once bad enough and the turbo reaches high enough rpm, it will come apart...comoressor "blades" spinning at 170,000rpm coming apart is rather destructive.