How can we improve the performance of stock G15A?

[Addy346]

Hello Guys,

I have running G15A in my Khyber 1994. I just want to know, is there any way we can improve the performance of stock G15A. Please if you mention something very techy then do explain it a bit for my understanding.

Regards,
Adeel
Click here for SOLUTION

[Sha2eb]

Hi Adeel,

You can try the following things:

• Spark Plugs - go iridium (about PKR 3k)
• Spark Plug Wires - go for silicone based low resistance wires (about PKR 2.5k)
• Cold Air Intake (about PKR 3.5k with the flexible pipe - might not help too much in the summer though)
• Performance Headers - replace the original ones with performance headers (about PKR 7k to 10k)
• Go straight pipe - 2.25 inches (about PKR 5k to 7k)

[Addy346]

@sha2eb,

Already have the cold air intake and straight 2.5" down pipe. from where i can get the performance headers? and what does they actually do?
Any specific brand for plugs and wires?

[davilz]

Where you from bro??

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[Sha2eb]

I was running NGK iridium plugs and NGK Type R silicone wires on my G16b motor. They performed great for me.

Headers i believe you will have to get them custom made bro. I couldnt find them easily available in karachi so stuck with the original manifold.

Get the injectors cleaned out.

Fuel filter replacement.

Fuel pump should be checked out.

Umm other things you might wanna check is the clutch plate pressure plate and bearing combo... Sometimes that could be the hiccup in the engine's power going to the wheels.

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[Addy346]

@davil,
I m frm lhr

@sha2eb
How much exta hp i will b getting with these mods?

[Addy346]

Anyone with same setup

[Addy346]

I am also not getting good consumption, i am getting 11 to 12km/l with ac in city.

[Addy346]

Mugh ko bhi koi lift krwa de

[Sha2eb]

@davil,
I m frm lhr

@sha2eb
How much exta hp i will b getting with these mods?

Dont know exact figures buddy... No dyno facilities in karachi

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[uiv]

Hi Adeel,

You can try the following things:

- Spark Plugs - go iridium (about PKR 3k)
- Spark Plug Wires - go for silicone based low resistance wires (about PKR 2.5k)
- Cold Air Intake (about PKR 3.5k with the flexible pipe - might not help too much in the summer though)
- Performance Headers - replace the original ones with performance headers (about PKR 7k to 10k)
- Go straight pipe - 2.25 inches (about PKR 5k to 7k)

... or one can just throw all this money in garbage, make sound from one's mouth, and pretend that they're going fast.

(I wanted to leave it there, but then I thought I should enlighten you with some facts. I won't entertain any arguments, these are all facts.)

Spark plugs: If anything Copper > Iridium when it comes to power.
Plugs wires: OEM > any other type across all RPM range.
CAI: Performance loss, compromised engine life.
Exhaust Pipe: 2.25 inch on NA G15? What's wrong with 5" then?
Headers: Properly designed ones should help, but you cannot design better than OEM ones, and no dyno to check them. So stick to the OE.

[uiv]

Hello Guys,
I have running G15A in my Khyber 1994. I just want to know, is there any way we can improve the performance of stock G15A. Please if you mention something very techy then do explain it a bit for my understanding.

Let me be the bearer of bad news: you cannot make it any faster than Suzuki would- and they did what they could.

There's no such thing as stock performance, and certainly nothing as cheap performance.
You can go all-motor: shave it's head, increase CR, streamline manifold, put aggressive cams, stronger con-rods, raise rev limit, and run it on hi-octane- but that all would cost you more than a couple of G15s.
Or you can turbo charge it.
Or simply go for bigger motor. No replacement for displacement, right.

That's all, anything other than that, and you're probably losing both power and money.

The cheapest thing to do to make your car faster is to lose weight + good old tuning.

[Addy346]

^^ i am not trying to make it faster than suzuki company, but i am not getting the output what other ppl r getting from it. I have gone through different topics discussed here, ppl r getting mileage arnd 14 to 15km/l with ac in city, thr 0 to 100 time is around 9 sec, whr is mine is arnd 11 sec (it could be my fault, cuz i tested it with 3 adults in the car). Whenever i went for tunning after seeing the plugs they always say ke ur car petrol consumption is ok

[uiv]

^^ i am not trying to make it faster than suzuki company, but i am not getting the output what other ppl r getting from it. I have gone through different topics discussed here, ppl r getting mileage arnd 14 to 15km/l with ac in city, thr 0 to 100 time is around 9 sec, whr is mine is arnd 11 sec (it could be my fault, cuz i tested it with 3 adults in the car). Whenever i went for tunning after seeing the plugs they always say ke ur car petrol consumption is ok

14, 15 km/l seems right- but it totally depends upon driving style: how ofter you change gears, where do you keep your RPMs in city traffic, how much you idle and stop-start, trip length, load carried, etc etc.

For both, performance and economy, you can start by giving it a good old tune up, and by getting rid of all aftermarkets and sticking to the OEM parts.

If you add weight you'd always end up losing time. Two added adults, apart from the driver, could weigh around 160-200 kg, so 2 seconds is about right.
There are a lot of online calculator for bhp onne vs 0-100 times. Try those, they'd give you a good idea if you're slower than the standard, but it seems fine to me.

[Addy346]

^^now these r thr ans i was looking for, i am not getting 14 to 15km/l even with soft foot, i try to keep rpm arnd 3 at max. As of now i m not using any after market thing all stock

[Addy346]

still waiting for the help

[kenblock]

let me tell you main thing g15a has low comression pistons install g16b high compress pistons and G13B Dohc head and aftermarket headers thats it.

[kenblock]

G13b dohc over size pistons intake and headers