i made 425bhp with a 20g , on 95 Ron , no additives . This is with a JDM 01 sti . Other mods , CAI , Downpipe , 3" exhaust , 800 cc injectors,upgraded fuel rails and pump and ECUTEK.So with better octane will definitely cross 450bhp .

 

425bhp on a 20g, that must be some sort of record? Most people seem to struggle to make 400 even with vpower + nf.

Where did you have the power measured?

 

Its well documented that 400+bhp with a TD05/20g is very rare indeed.
Most 20Gs are giving out tops 380-390bhp on Vpower.

 

it will depend on which dyno it was measured at.

 

Must have been well lane ;-)

On a 2 litre we got (Bob's mapping) 425bhp on a 20g with Race Fuel and water injection

On 95 Ron you'd be lucky to get a 'real' 350bhp

In fact with Optimax, full bottle of NF and a lot of mapping the 20g got 385bhp on a very cold day

Great Turbo though for someone looking for a first Modification

 

i've been lucky enought o be out in 500bhp and a 450bhp both classics, and have to say there isn't that much difference, off the line as stated getting the power down is an issue, where the power makes a differecne is from 40-70 and beyond, how ever not by huge amounts

 

BHP is for top end
TORQUE is for acceleration

 

400 to 450bhp from a 20g

 

Think i got all or most of upgrades covered not just engine, and yes i guess your right 500 is to much for road i even thought 400 was alot at times, i got the e-boost 2 fitted so i will be running it at low boost setting 1 pretty much all the time which will be around 350bhp ish and sometimes in setting 2 for a play setting 3 for drag & track

 

car actually made 316 whp on a dynojet dyno , estimated drivetrain losses was 25 -26 % . So i calculated the bph power which is what u guys normally use . If u use a lower average of 22% which is what some use for drivetrain losses still works around 405 bph . Anyhow car really made 316whp to the ground ,on a 20g with no additives and conservative boost of 20psi on 95RON .

 

superb
martin

 

With only V-Power, I reckon 390hp will be tops for a 20G, but if your going to add NF, Methanol, Toluene etc....... They'll be good for upto 450+ imo.

Speaking from experience, we got 425hp & 384lbs/ft (DD Road Dyno) out of a AFP05-20G with some good supporting mods and a splash of Meth & NF. I reckon if i'd known what I know now, we could have got a bit more with relative ease, plus, baring in mind, a good mapper is worth his salt always leaves a safe margine in his mapping & the mapper that mapped my car is worth his salt. So, if taken to the limit, the 20G could produce even more power/torque?

 

im getting a 20 G fitted at slow boyracing and il be happy if i see the wrong side of 400 with meth.do u have the graph? for the SUPER 20G ur going on about?

 

a good mapper is worth his salt always leaves a safe margine in his mapping & the mapper that mapped my car is worth his salt.

Totally agree , did not think we could have broke 300whp , but my tuner Jason Ling from ECUTEK , did a great job to get 316whp.

I dont have the option on this forum to post the graph as an attachment .

But the 20g is a BLOUCH .

Soon i will be tuning on 100 octane , hoping to break 350whp with 20g .

 

Shaun, that statement is not true, if you are suggesting that the car with the most torque will accelerate quicker.

BHP is for top end, and also for acceleration. Its the area under the BHP curve that is used to calculate shift points for max acceleration.

 

Is that me your asking?

 

I am not suggesting that a car with more torque will always accelerate quicker.... where did you pull that from what I said?

I know it's all about "below the line"...... but without torque you won't accelerate and without bhp you won't get beyond 0mph.

So..... what I said is still correct.

 

Shaun, without 5252 you won't accelerate either, since you also need that to get the power

 

Am F1 car has about 250lbft of torque and that accelerates pretty quickly.

Without torque you dont have any bhp (think of bhp as torque x a proportion of rpm) and without bhp you wont have any torque as once again one of the numbers is zero.

I see what your saying but its a little confusing.

If I had a fantasy car that generated 500bhp from 15krpm to 20k rpm but only had 100lbft of torque, it would accelerate way quicker than a car with 500lbft of torque from 1000-6000rpm but only 100bhp.

Its always about bhp whether your talking top speed or acceleration.

It gets confusing as a car which makes 500bhp at 5krpm but only 100bhp under 4000rpm and above 6000rpm (yes I know its silly but its just to prove a point) has a very narrow band in which to get the power down. If you could gear it exceptoinally well with a decent DSG box and lots of gears it would be like having 500bhp at any speed, but with long gearing you'd be slipping into the 100bhp parts of the power band and be outrun by a car with 300bhp from 2k rpm to 7krpm.

I know you realise this Shaun, but from your comment it would be easy for someone just skim reading to get the wrong idea of what you were getting at.

Torque and BHP are so confusing because they always dynamically change with rpm.

I find what most people have trouble getting to grips with is why high torque does not mean high bhp. Torque is really just the ability to exert force, its torque combined with rpm that results in power, and power is whats needed to accelerate a car, not torque.

You can accelerate quickly with high bhp and low torque (eg F1 car), you cant accellerate at all well with low bhp and high torque (a tractor). Of course both together are very useful as you can have long gears and still get lots of power down.

 

Borat52,
It is very complicated mate..... but, do you think the F1 car with 500lbft would accelerate quicker or not against one with 250lbft?

 

of course it would, it would have twice the power at at any given rpm

 

Sorry.... momentry lapse of logic there. D: