General bhp punto sporting mk1
- Thread starter kenyon
- Start date
Currently reading:
General bhp punto sporting mk1
Why is this incorrect?
You obviously have no praticle experiance or skill.
Thanks for your lecture. I obviously haven't learned anything in the past 27 years of performance tuning and development.
Why is this incorrect?
You obviously have no praticle experiance or skill.
It's spelt PRACTICAL.
Why is this incorrect?
You obviously have no praticle experiance or skill.
are you a plonker on purpose?
me53350
New member
I think it's funny.
I have 3 people telling me i am wrong and none of them cannot explain why!
27 years of what?
I don't want arguments just a discusion.
Thanks, Tom.
I have 3 people telling me i am wrong and none of them cannot explain why!
27 years of what?
I don't want arguments just a discusion.
Thanks, Tom.
you ever heard of air to fuel ratio? There is an optimum value in any engine that gives optimum power. More fuel than necessary = running rich - an incomplete, inefficient burn.
err... i think that says enough...
i dont claim to know everything either, but i have worked on plenty of engines and read plenty about them.
Last edited:
ermm, ive already explained.
just to make sure, adding more fuel wont increase power at all, you aso need to get more air in and get the waste gases out quicker.
simple.
me53350
New member
That ratio is the stoichiometric ratio.
14.7 parts air to 1 part fuel.
This is for an efficient burn when the engine is at working temperature; when cold the ratio is more like 13.5 parts air to 1 part fuel.
Increasing the fuel part in the ratio will increase power to a certain extent. Yet too much fuel will decrease power therfore people only increase the amount fuel injected to certain point giving poor emisions.
14.7 parts air to 1 part fuel.
This is for an efficient burn when the engine is at working temperature; when cold the ratio is more like 13.5 parts air to 1 part fuel.
Increasing the fuel part in the ratio will increase power to a certain extent. Yet too much fuel will decrease power therfore people only increase the amount fuel injected to certain point giving poor emisions.
ffs, standard ecu varies the fuelling all the time. its how they are mapped for emmissions and effeciency yes.
however, adding more fuel DOES NOT MAKE MORE POWER!!!
me53350
New member
only one way to find out. i will test this on a 1.1n reg punto i have when i get the chance and i will test a differant amount of resistors.
i just did 0-60 in 8.2 seconds in my 1.2 sporting which i have just put back together, will have it rolling roaded soon...
any guesses what sort of torque curv i will get and what my max bhp will be? i am guessing around 100-105 maybe?
i just did 0-60 in 8.2 seconds in my 1.2 sporting which i have just put back together, will have it rolling roaded soon...
any guesses what sort of torque curv i will get and what my max bhp will be? i am guessing around 100-105 maybe?
if its a near standard engine with a standard map, maybe 80-85bhp?
me53350
New member
Standard map but just had a big head skim, polished valves (stems and faces), has been ported and polished including inlet manifold, also it has the all important K&N air flilter
lol ;the in. manifold gasket is now restricting the flow as it's now slightly smaller than the ports and manifold.
I don't think anyone here is directly disputing that using resistors will have absolutely no effect on the car's performance. But what can undoubtedly be accepted is that it will completely cock up your engine. And that the gains will really be completely minimal considering the extra fuel wasted.
AND that if you dump extra fuel in the engine, you really should give it extra air to burn it. The reason these people are saying you won't get performance increase is because they all know that fuel needs oxygen to burn. Consider the volumetric efficiency of a typical NA engine. Solving THAT problem will increase performance - for example, polishing all those bits and bobs for better airflow
After you've tried this 'mod' and eventually bricked your car testing this less-than-halfhearted job at increasing performance what are you going to do?! I just don't think it's worth it mate, save the car, don't go benchmarking 'chips' that will damage your lovely punto; it sounds to me like you're going down a better road with all this skimming and air filter business!!
AND that if you dump extra fuel in the engine, you really should give it extra air to burn it. The reason these people are saying you won't get performance increase is because they all know that fuel needs oxygen to burn. Consider the volumetric efficiency of a typical NA engine. Solving THAT problem will increase performance - for example, polishing all those bits and bobs for better airflow
After you've tried this 'mod' and eventually bricked your car testing this less-than-halfhearted job at increasing performance what are you going to do?!
I just don't think it's worth it mate, save the car, don't go benchmarking 'chips' that will damage your lovely punto; it sounds to me like you're going down a better road with all this skimming and air filter business!!
Standard map but just had a big head skim, polished valves (stems and faces), has been ported and polished including inlet manifold, also it has the all important K&N air flilter
the in. manifold gasket is now restricting the flow as it's now slightly smaller than the ports and manifold.
80-90bhp then, going off an educated guess.
why didnt you get the gasket enlarged? and also, didnt you know not to enlarge the exhaust ports?
Last edited:
What the guy doesn't want to understand is that ECUs are different.
The resistor business might have a short term effect on most modern ECUs but no more. A lot of the ECUs now are going into default mode and performance is limited by the default settings. They also will use more fuel for less power and will log on faults in the data logger, which will confuse the issue when real problems occur.
A lot of the theoretics that know how to play with computer keyboards fail to understnd that there is some reality in performance tuning and that performance tuning follows some principles. Of course us oldschool tuners do not know what we are talking about.
me53350
New member
All i did to the exhaust ports was polish them; they are original size.
Similar threads
