cheapest way to boost power

[kwnelson]

Without a large outlay, what is the most economical way of increasing BHP.    Did a chip on my 2ltr Qashqai Diesel,transformation 15% increase,   any thoughts?

[househead]

Depends what you consider to be a large outlay?

Unfortunately there aren't many gains to be had without going turbo/supercharger or throwing another engine in. There are some NA 1zz cars that have dyno'd to 170 BHP, but afaik they've got aftermarket cams and (probably) aftermarket ECUs.

MAF Mod might be worth a look, doesn't cost much (2zz injectors + a MAF spacer). Not sure what the gains relate to in power terms though.

It's rather unfortunate that the stock ECU cannot be simply remapped.

[Gatouzze]

Depends what you consider to be a large outlay?

Unfortunately there aren't many gains to be had without going turbo/supercharger or throwing another engine in. There are some NA 1zz cars that have dyno'd to 170 BHP, but afaik they've got aftermarket cams and (probably) aftermarket ECUs.

MAF Mod might be worth a look, doesn't cost much (2zz injectors + a MAF spacer). Not sure what the gains relate to in power terms though.

It's rather unfortunate that the stock ECU cannot be simply remapped.

Like he said, the ECU cannot be tuned directly... you need either a stand alone ECU or a piggyback but do not expect 15%.

If you would like to go the piggyback way, I am selling mine atm

[Carolyn]

Buy a Porker.

[Call the midlife!]

Buy a Porker.

I AM a porker, doesn't do my performance any favours either 😆

[househead]

You could always paint a stripe on your car? That's worth at least 15bhp

[Gaz mr-s]

I think the O/P is probably going to be a little disappointed with the answers.   

[Petrus]

1. There is no cheap way to a large boost of power without áctually boosting the intake. Even spending on a change of cams and head porting gives very modest gains only.

2. Evidence based best practice:

- Have a look at the unltimate inlet thread. You will find that the intake is very good already.
- MAF mod. ; tricking the ecu.
- Free up the exhaust. The OEM exhaust is thé big restriction.

[Call the midlife!]

I think the O/P is probably going to be a little disappointed with the answers. 

A bit like the power...

[s12vea]

The cheapest way to get more power out of a 2 is to buy one which has already been turbo charged or engine swapped.

[Gaz2405]

If you're handy on the spanners and look out for items second hand, you can self build turbo for around £2-£2.5k. Which also includes mapping it yourself....

[jvanzyl]

I'm surprised no one has mentioned lightening the car yet...

[Ardent]

I'm surprised no one has mentioned lightening the car yet...

I was going to, but original question was about "increasing BHP"

[jvanzyl]

I'm surprised no one has mentioned lightening the car yet...

I was going to, but original question was about "increasing BHP"

I understand but the point of Bhp is to go faster, you can go faster by being lighter... plus if money is a key concern- taking stuff out is a viable solution

[Ardent]

I don't disagree.

But the op, was also using their point of reference of a simple re-map. Wants more BHP, made no ref to wanting to lose creature comforts. Not sure money is an issue, has some, just looking for most economical option.

Had the question been phrased differently, we would be up to 3 pages of suggestions.

[Joesson]

I'm surprised no one has mentioned lightening the car yet...

I was going to, but original question was about "increasing BHP"

I understand but the point of Bhp is to go faster, you can go faster by being lighter... plus if money is a key concern- taking stuff out is a viable solution
[/quot

I'm surprised no one has mentioned lightening the car yet...

@Petrus has been away in the big city.

[shnazzle]

Doesn't say how much power  

Catless manifold
Decat pipe
2nd hand PFC standalone with suiting map
Stage1 cams

Estimated increase = 20% for about 1500ish.

Much easier to make gains via "chiptune" on a turbo car and a diesel. Petrol N/A is a more mechanical ballgame.
On one of our old turbo diesel cars, 400 quid gave us a 25% boost in power. Just doesn't exist for N/A, even if you could fettle the ecu.

[Ardent]

Wow!
Just had a penny dropping moment, realizing how much of a peasant I am.

That 1500ish is viewed as economical.

I need to re-calibrate.

[Call the midlife!]

Wow!
Just had a penny dropping moment, realizing how much of a peasant I am.

That 1500ish is viewed as economical.

I need to re-calibrate.

It's quite a conservative "ish" as well, probably another 2-300 ish...

[Bernie]

Wow!
Just had a penny dropping moment, realizing how much of a peasant I am.

That 1500ish is viewed as economical.

I need to re-calibrate.

It's quite a conservative "ish" as well, probably another 2-300 ish...

"Ish" nowhere near

138 to 171BHP = 24% increase

From Robs files

Crower Stage 1 Cams (Monkey Wrench USA). £100
Apexi Power FC (ECU) with Commander hand controller £1,000
Mapping / Dyno by Noble Motorsport 171 BHP.   £550
Fidanza lightweight flywheel £350
Up graded serpentine belt tensioner £75
PPE Cold Air Induction system (Monkey Wrench USA) £300
Zero - 4 into 2 Equal Length, tuned collector, Manifold SS.  £575
Silverstone Performance De-cat pipe, fitted with 200 CEL Sports Cat £500
Blueflame Custom Twin Exhaust.  £325

Parts Total £3,775

[Joesson]

Wow!
Just had a penny dropping moment, realizing how much of a peasant I am.

That 1500ish is viewed as economical.

I need to re-calibrate.

It's quite a conservative "ish" as well, probably another 2-300 ish...

Those figures are a large % of the value of our cars !

 PS @Bernie's figures represent replacement vehicle costs for our cars!,

[Zxrob]

Buy a Porker.

This ^^^^

Rob

[shnazzle]

Wow!
Just had a penny dropping moment, realizing how much of a peasant I am.

That 1500ish is viewed as economical.

I need to re-calibrate.

It's quite a conservative "ish" as well, probably another 2-300 ish...

"Ish" nowhere near

138 to 171BHP = 24% increase

From Robs files

Crower Stage 1 Cams (Monkey Wrench USA). £100
Apexi Power FC (ECU) with Commander hand controller £1,000
Mapping / Dyno by Noble Motorsport 171 BHP.  £550
Fidanza lightweight flywheel £350
Up graded serpentine belt tensioner £75
PPE Cold Air Induction system (Monkey Wrench USA) £300
Zero - 4 into 2 Equal Length, tuned collector, Manifold SS.  £575
Silverstone Performance De-cat pipe, fitted with 200 CEL Sports Cat £500
Blueflame Custom Twin Exhaust.  £325

Parts Total £3,775

That's for all brand new kit Bernie I'm going off 2nd hand for the PFC,stock backbox, no intake, no light flywheel, and a map that just needs tweaking. 


My point was really; 1500 is what's going to get you near 15% gains.
Cheapest way to add power is 2nd hand manifold without pre-cats and a 2nd hand decat or sports cat. Won't be much. But for maybe less than 200 you'd feel a noticeable difference on the bum dyno.

[Bernie]

Wow!
Just had a penny dropping moment, realizing how much of a peasant I am.

That 1500ish is viewed as economical.

I need to re-calibrate.

It's quite a conservative "ish" as well, probably another 2-300 ish...

Those figures are a large % of the value of our cars !

 PS @Bernie's figures represent replacement vehicle costs for our cars!,

The time Rob was purchasing was around 2012 so value of car v Parts was significantly different

But making the point that there's no easy way on our 1ZZ to improve BHP and Toyota squeezed quite a bit out of it in stock form

Tweaking a diesel is a completely different matter a simple tuning box @ £359 increased my TT from 170 to 205 BHP

[Petrus]

I don't disagree.

But the op, was also using their point of reference of a simple re-map. Wants more BHP, made no ref to wanting to lose creature comforts. Not sure money is an issue, has some, just looking for most economical option.

Had the question been phrased differently, we would be up to 3 pages of suggestions.

Simples.
Indeed; the op asked for cheap power boost.
Hence me not going off topic ;-)