Mod for Auto NA cars, useless?

[Jhoo]

Have seen several posts stating that mods on NA Auto-trans cars will/can not meet their results. They are specifically exhaust mods(free/semi flow), air-intake(open-pod CAI), PBV, ECU piggy back, air booster gadgets.

 

As most mods mentioned above will have definite negative impact on low end torque & may not even meet their results for high end power?

 

Most makes in SG are NA & autos, dose it mean thats the end of moding for such cars? I cant afford TC or SC rides and have to stick to my 1.8 NA for a while. I've committed fr 15" to 18" rims nd would definitely like some boost for my ride.

 

I have converted my exhuast & in the process of upgrading:

1) Air intake(open-pod with CAI)

2) PBV (still considering, any help for Auto?)

3) Piggy back chip(Is Dyno required, after installation)

 

Please help to enlighten, as I would not like to end up spending $ for the wrong reasons. Thanks alot in advance.

Any success stories will be helpful.

Edited January 23, 2005 by Jhoo

[Phochem]

Hi bro, me driving an auto car too. Tink u can skip getting the open-pod, will lose low-end torque. Do all upgrades u hav in mind and lastly dyno-tune ur piggyback ecu to bring out the full potentials of the upgrades u've done.

[Vtim]

I agree with Phochem, you should used a high flow drop in replacement filter, ie k & n instead of open pod & direct cold air (near bumper area) & pipe it to the stock airbox intake

[Sheltie2306]

1.8 NA, hrmm ... sounds like SEAT ?

My personal experience,

1. Air intake, yes will help marginally

2. PBV, this is a variable fuel pressure regulator, mainly use as an alternative for bigger injector for TC cars. Don't think it will be of any help to you.

3. Piggyback - can use it to advance the timing a little, and lean out a little, probably 10% more bhp, but it's usually considered too expensive for the gain on NA car, may not worth it.

 

I suggest you consider lighten pulley if it's available for your car model.

[Jhoo]

I have always wanted to, but jumped straight at the reply each time. Might be a bit slow but still have to do it.

 

Congrats on yr twins! (My 1st boy is also Javier , 6 yrs now)

 

Back to the subject, what exactly is different between the 2? Seen alot of cars with the high flow K&N plus CAI & improved performance, but does it means that my SS exhuast investment has gone bonkers, no yield at all? Sure hell lot of money for asthetic purpose

[Jhoo]

BINGO, just felt that my tody need an extra boost when on the 18"s comin next wk Note that you're on a 400BHP project

 

Since now I have endup a wrong foot on the SS exhaust, any proposal on the air intake? (might considering taking out my Cupra R badge liao, so malu)

 

Wats the cost/source of lightened pulleys for my ride ant ideas?

[Jhoo]

Hi! What mod was done yr ride? May be can highlight the do's and dont's!

PM me if confidential !

Edited January 23, 2005 by Jhoo

[Dwoon]

Seems like you've done or plan to do what's usually carried out. To suueeze out that extra bit more for an NA car, you might wanna consider porting & polishing. Not gonna be cheap and might not be $ per HP is expensive.

[Vtim]

since yours an Auto, you might tend to loose some low end torque when you used open pod, best for you is to go for k & n drop-in & CAI pipe to your stock air box unless you intend to upgrade to a tunable ECU (piggyback) then, you may not loose too much of low end torque with open pod. The best position for the filter is as close to the throttle body as possible, IMO

[Sheltie2306]

sh ... must be vtim. By the way, the 400bhp project is hitting some technical problem, in reservist now, so have to hold for a while.

[Ff2004]

Sori....what you mean by 'end up a wrong foot on the SS exhaust'?

 

Nothing wrong with them I suppose....

[Jhoo]

No, nothing wrong with the exhaust. "Wrong foot" means step into what they call "the dark side"! or kena Mod virus!

 

Its just that my current setup have not use its potential yet. I was initially wanted to have some boost after install my heavy 18"s. Now, I don know how far i am tempted to go....

[Jhoo]

Hi guys,

 

I would like to know what is the impact compare to stock setup, please help to do a simple evaluation on the following setup:

 

1) Stock

2) K&N drop-in, Free flow muffler (low-end:? high-end:?)

3) Cone, Free flow muffler (low-end:? high-end:?)

4) K&N drop-in, Free flow muffler, piggy back (low-end:? high-end:?)

5) Cone, Free flow muffler (low-end:? high-end:?)

 

Simply replace the "?" with:

if better than stock: +, ++ or +++

if worse than stock: -, -- or ---

 

Thanks for helping.

[Vtim]

your 3) & 5) same ley

 

there is another thing that you didn't consider, "banned the Feline" from the car

[Dwoon]

Which is the most beneficial for power....... Also, up size the pipes???

Edited January 25, 2005 by Dwoon

[Jhoo]

ops, (5) should have piggy. Without that thingy, lagi free flow right? Will that equate to more low-end lost?

 

Just wondering how many made it thru inspection? Specific centre that may close one eye?

 

Btw, why you never include the "+" or "-" for item 1 to 4 for my reference huh?

Edited January 25, 2005 by Jhoo

[Vtim]

the more the merrier loh! up size only if you are having a TC engine

[Vtim]

me not that 'expert' in this field lar! maybe Saaber can help you one this