[rdkarthik]

Originally Posted by gigy

what are all of you trying to do with changing resistance of sensors? when the air temperature is high it is the sensor responsibility to inform the ECU and it adjust the fuel accordingly.
so if you force ECU to think the engine is being fed cold air, are you expecting increase in power. Tecnically it is not possible. only when the correct input data is given the ECU, it can produces power as per throttle position.
if you need more power increase mass air flow( turbo), try for colder air (CAI) intake and fuel , allow faster exhaust exit within the power band possible from engine. rest all theory is pure ****.
there is one basic rule for everything, energy can neither be created nor destroyed. so there has to be more input for more output...... how much you can drag this is based on limits of the engine physical size and related things.

Dear gigy, there is more to ECUs and tuning. All you mentioned about FFE,FI and CAI are valid. So are the laws of physics ..

ECUs from the factory are mapped keeping in mind the average driver. Its a compromise between economy and performance. There is always leverage to extract the remaining bit from it. A colder IAT will make the ECU richer on fuel and add more advance for ignition. This will increase engine power.


This "compromise" with stock ECUs is exactly why aftermarkrt flashing/piggybacks/standalones help extract more power than stock.

Its different with a programmable ECU. When a system like this is installed and tuned/mapped for the best performance, trying to fool it into seeing a lower temperature will makes things worse. It will end up running richer and with more ignition advance than what is best.

[v1p3r]

Originally Posted by ananthkamath

Stage 2) Full exhaust system from cylinder head flange onwards (not just freeflowing muffler) along with rejetting/remapping/piggyback

I don't think you need to remap for an exhaust system.

[ananthkamath]

Originally Posted by v1p3r

I don't think you need to remap for an exhaust system.

why not? i believe many aftermarket exhaust manufacturers recommend a remap?

[v1p3r]

Well, AFAIK, most exhausts are bolt-on replacements.

[rdkarthik]

Originally Posted by v1p3r

I don't think you need to remap for an exhaust system.

For the best performance, a remap is necessary. Engine characteristics change with changes to intake and/or exhaust dimensions.

[gigy]

the compromise of manufacture in india make to maximize fuel economy is what we can remap for best performance. if an after market product helps in achieving its good, but many of the ecu can be remapped directly for performance. ecu can be changed.
other things where manufacture cuts cost is wheels & tyres. structural systems like stabilizer bars, strut braces, abs & traction control because average indians don't need this. they are reluctant to even wear seat belts & helmets. improving handling & safety also helps in pushing car to its full potential.

[nextlevel350z]

Guys just curious...how popular are engine swaps in India? I've gotten several PMs regarding Indian market cars being grossly underpowered. What are some of you guys putting down stock and on what cars? I have some specs, provided by Viper and from our tech dept...but i'm just curious.

There is a saying that the V8 muscle car guys have in the states..."there is no replacement for displacement" - which, the import tuners say, forced induction is that answer. And to some degree, they are correct, but even forced induction has limits and dimishing effectiveness at high boost levels.

So I guess what i'm saying is...if some of you are dealing with 75 whp or less, and say less than 1.5L of displacement, and you are going to spend $1500 USD on mods anyway, have you ever considered an engine swap? There are a ton of H & B Series Honda motors floating around the USA, not to mention Nissan SR and VQs. Not too many vvti Toyota motors available for swaps yet, but i'm sure they are coming (and the 7a and 5s Fe's aren't anything to get excited about IMO). Just a thought. Comments welcome.

[ported_head]

Originally Posted by nextlevel350z

So I guess what i'm saying is...if some of you are dealing with 75 whp or less, and say less than 1.5L of displacement, and you are going to spend $1500 USD on mods anyway, have you ever considered an engine swap? There are a ton of H & B Series Honda motors floating around the USA, not to mention Nissan SR and VQs. Not too many vvti Toyota motors available for swaps yet, but i'm sure they are coming (and the 7a and 5s Fe's aren't anything to get excited about IMO). Just a thought. Comments welcome.

I suggest you make a trip to India, you will be surprised at what we have here. I also suggest a thorough read around the forum. We might get inadequately powered stock cars, but aftermarket talent is pretty much on par with the rest of the world. Though we do lack a dyno.

I'm sure you already have details for all the Indian cars' stock specifications, since the Tri-Phase works on them all.

[ananthkamath]

Originally Posted by ported_head

but aftermarket talent is pretty much on par with the rest of the world.

We may have the talent and we may have the ingenuity, but then we lack equipment like you said and therefore cannot be on par with the rest of the world when it comes to achieving quarter mile times and lap times.

[Sideways]

Originally Posted by ananthkamath

We may have the talent and we may have the ingenuity, but then we lack equipment like you said and therefore cannot be on par with the rest of the world when it comes to achieving quarter mile times and lap times.

Patience my friend. All in good time.

[v1p3r]

Hot swaps are D15 and B16 mills into Honda Citys, which come with 106 hp. Twin-cam Suzuki Swift GTi swaps into Suzuki Zen/Alto bodies, and even Honda mills into Suzuki bodies. The Lancers have various Mivec options, and some Evo powertrains too. And then there's always turbocharging.

You must remember though, this is all illegal here.

[Kaizer Sozay]

Originally Posted by ananthkamath

why not? i believe many aftermarket exhaust manufacturers recommend a remap?

Pls elaborate on the remap part

[abhibh]

Originally Posted by v1p3r

HTwin-cam Suzuki Swift GTi swaps into Suzuki Zen/Alto bodies, and even Honda mills into Suzuki bodies.

Please shed more light on this.

[nextlevel350z]

Originally Posted by ported_head

I suggest you make a trip to India, you will be surprised at what we have here. I also suggest a thorough read around the forum. We might get inadequately powered stock cars, but aftermarket talent is pretty much on par with the rest of the world. Though we do lack a dyno.

I'm sure you already have details for all the Indian cars' stock specifications, since the Tri-Phase works on them all.

Ok, I really don't need the sarcasm, or your attitude. I don't attempt to portray myself as an expert tuner, I am not. I know what I need to know, about various aspects; my knowledge is not specialized. And I am trying to grasp concepts from your region, and help as I can along the way.

I don't know where you get your attitude problem from, but someone that thinks excess air in a lean a/f mix has some sort of "cooling effect" has no grounds to criticize my automotive knowledge.

Also, no disrespect intended...but saying that your aftermarket talent is "on par" with the rest of world, without a dyno, is a ridiculous statement. You can't tune didly squat without a dyno.

I appreciate the rest of the helpful comments regarding my post. Ported-head, i'm not interested in getting in an ego contest with you, apparently you have enough for the both of us.

[pawan]

Originally Posted by rdkarthik

For the best performance, a remap is necessary. Engine characteristics change with changes to intake and/or exhaust dimensions.

but on the indian cars can the stock ecu be remapped.