I have shared my knowledge with you when i said TPS does not control fuel mapping on the GS150R or any other carburetted engine. And i have given a pretty good reason why. It's not that i want to prove you wrong, but to curb misinformation from spreading!

TPS and a whole lot of other sensors control fuel mapping only when there is electronic fuel injection.

Well, unc google will tell you that TPS doesn't control fuel in a carburetted engine.

Cheers!

ok you might be correct but TPS as a technology DOES control fuel map, if for any reason its not in caburetted engine then it should not be called TPS as I said in the earlier post.....it might be a small circuitry that helps the ignition.

But since suzuki clearly states that it has TPS, I firmly believe it must be helping in fuel mapping......anyway I will dug further (I enjoy that ) and probaly get an explanation on either side...............in the mean time happy discussion......

Thinking Zuki !!!

Hey guys .. need a help .. I'm going to buy a new ride soon and GS150R is on my mind .. could you please throw some light on the after sales support such as servicing and availability of spare parts .. mileage you are getting ?

Also please tell me how fast the bike is in terms of straight line speed and pick-up compared to other bikes you've driven .. I've a Uni and its always first of the blocks at every green light and ahead of the pack after some time without much effort on the throttle

And if someone knows, please tell me its on-road price in b'lore

Right on Target!!

As i have already told you earlier it's no rocket science stuff.One of the first bikes to have engine rpm based digital CDI was LML Freedom Prima 125.If LML can do it, then it's a not that exotic item to plonk in the GS for Suzuki.The systems get complex but the basic principle remains the same.

From where did you get this information? And where did the ECU come in a GS150R or was the info pointed for general explanation!!

@andante
Awesome explanation, there!!

@Amigo
Not many have test rode the GS150R out here.It would be great if you have a test ride of the bike.You will get a clearer picture, then!!

For starters the bike is a smooth performer but as i haven't test ridden the bike i can't really comment on outright performance but still expect it to be one of the fastest 150cc bikes currently on sale in India!!

geee I am happy you agree

Basic principle is always same, we are not reinventing wheel.....in that sense the carb today is also the same crab 25 years ago but has been given a complete overhaul, this does not make carb of today "no big deal" does it...

BTW did LML prima had TPS???

I was merely explaining what TPS do, so yes take it as a general explanation.

Sam9s, whatever I had to say was not meant to be like a competition, all I'm trying to do is educate about what a carb can and cannot do. Really there are no carbs currently out there that have valves that are controlled through electronics. The only thing you might see is an automatic choke.

Carbs come in two kinds the traditional carb with a fixed venturi and the Constant Velocity (CV) kind. Both have been around since long. The one found on most 4 strokes is a CV carb, and I'm probably right saying that the GS150R has one too.

The TPS does provide some info, but it is used only for ignition timing. (And most modern carb bikes use it like that. Even my Honda Shine has one and uses it like that.)

So, once again, I'm not trying to hold a competition here. I'm just trying to prevent some myths about this thing from taking a hold. Nobody benefits from being misinformed.

Congrats Sammy for your new bike... good write up, great review.

No point in denying a 'fact'!!

As i had mentioned earlier even the Victor and good'ol Fiero had it.Victor's digital CDI was actually a more advanced version of that of the Fiero, it had two ignition maps -Power and Economy and yeah it worked exactly the same way the GS's system works.The Prima had the engine rpm based digital-CDI!!

So true!!

Fact is subjective here.

It still does not ans my question......did it have the TPS.....and I guess the ans is no.............engine rpm based CDI is not what we are discussing here......are we?

point taken, and it does seem that you are correct, but makes me hard to believe that TPS is just for ignition timing, TPS as a technology has more to offer than just that.....anyway I will dig and see if I can find some concrete stuff on this.

BTW are you sure shine had TPS installed, AFAIK even FZ does not have TPS installed..............................I dont know it seems that just because GS has it people around have started underestimating it......just my thought through.

dude FZ has TPS, go and read on there website and owners manual. FZ also has fuel mapping. i will search and post info if required.

and use Wikipedia for TPS, you will come to know what it is used for.

FYKI,Engine rpm based digital ignition CDIs are more advanced and complex than throttle based systems!!

I really don't know how many times i have to tell you that TPS is found in almost all the bikes currently in sale in india and most of the bikes' production have already been stopped.Victor did have the TPS, the shift of the light from Power to Economy showed the ignition advancement and that was based on the throttle position.

Pulsars,Apaches, Ambitions, Shines, Unicorns,Centras, FZs all have TPS.I really don't know why you are thinking in the same lines as an ECU, it's a simple circuitry which is found in every bike currently in sale in India.

Pulsar DTS-i's have TRICS-Throttle Regulated Ignition Control System!! ...Want more proof!!

You won't find better replies than what andante is giving.It's really weird to see that you are agreeing at one post and then denyin the same thing at the other!!

Yes, honda shine has it, just like almost every other bike on the market in some form or the other. (I hope, I don't have to start linking to spec sheets.) The reason is that ignition timing when done right can boost an engine's power by a whole lot, actually by using more aggressive ignition advance you can boost an engines power. (See the aftermarket ignition modules for certain bikes.)

Please let go of the idea that a carburetted bike can have fuel mapping, the only kind of fuel mapping that happens is through physics in the carb. FZ like all other bikes will use it for ignition timing only.

Chicane, you're almost right there. The current crop of bikes use both RPM and the throttle position to determine their ignition advance. Ignition timing is a mix of RPM and load. RPM is obvious a sensor on the crankshaft measures it. Load is something that cannot be measured directly, but throttle position gives a good indication. So, at high RPM and a large throttle opening ignition will be advanced more than at high RPM with a small throttle opening. (It all has to do with, how much fuel is there to burn and when does it need to be done burning. Thus at high RPM or with a lot of fuel in the cylinder you need to ignite it earlier to get it to finish burning on time for the work stroke to get the maximum pressure. Also, it has to finish burning before the exhaust valve opens.)

yep TPS is for long time even Bajaj Legend (scooter) had TRICS. Suzuki is doing nothing new its same TVS victor thingy, tells abt gear change, Victor had a switch to move from economy to power mode if i am right.

Correction

Victor does not have a switch to move from eco to power. it happens itself, say when there is rapid acceleration, but becomes stable within a few seconds. same is the case with Kinetic Velocity.