Power gains from 3.0

[MattF]

So many ones - I feel like the Queen (not a queen!)

Apaache - when you'z ready....

So much easier when its not my truck!

[Apache]

Apaache - when you'z ready....

So much easier when its not my truck!

[MattF]

He'll probably bring the missus.

[marky]

Awesome thread - CALM DOWN = esp. Liverpudlians!

Intercoolers have secondary benefits - but that would just be telling

Especially all the 3rd Gens who would gain so much............

Thats me then! Anything for the Weekend SIR.
FORCED INDUCTION

[Sancho]

I would go for a free flow exhaust first (definitely works and looks/sounds pimp), then an intercooler (definitely works and give you an excuse to put a big scoop on your bonnet, which looks pimp), then a snorkel (which will give you cleaner, cooler air to start with, possibly with a slight ram effect. And looks pimp) along with a 'high performance' air filter, then space out the wastegate, then fit a bobbox, reset the ECU and see what happens.

[MattF]

then fit a bobbox

Right. I'm getting comfy for the lecture he's gonna' be giving you now.

[Sancho]

Right. I'm getting comfy for the lecture he's gonna' be giving you now.

Funny, I was just off searching previous threads to prepare my defence. On looking at the famous 'pre-bobbox test' thread (the one where Apache told us that he does know *exactly* how his radio works), it seems that even the resistor king himself agrees that it probably works by chucking more fuel in based on rate of change in the TPS. He also states, in order for such a thing to be useful, he believes you would have to match it with increased airflow both in and out. Which is why I listed all that other stuff before.

I forgot to suggest refurbished/new/uprated injectors too.

The way I see it, you make engines go faster by increasing the amount of air and fuel you can get it and the amount of exhaust you can get out. Exhaust goes first because everything else increases the pressure in the system, air next because it's easier, then chuck a load more bang juice in for a laugh.

[Apache]

Funny, I was just off searching previous threads to prepare my defence. On looking at the famous 'pre-bobbox test' thread (the one where Apache told us that he does know *exactly* how his radio works), it seems that even the resistor king himself agrees that it probably works by chucking more fuel in based on rate of change in the TPS.

And no-one ever did tell me what it actually does, so a guess is still a guess. What about the Bobbox website? Does it go any further these days than saying 'this thing makes everything great'?

I'd prefer to get an ECU remap from a reputable diesel tuner (Do Van Aaken do these?) backed up with hard facts that I can understand rather than snakeoil from someone who calls himself 'Diesel Bob'. Sorry, that's just the engineer / scientist in me.

Sorry to disappoint Matt, but I have to back to work and pretend to do the job they pretend to pay me for.

[Predictable Bob]

In rough order of cost/benefit.

Free flow exhaust.
Higher boost, about 15 psi max, if I remember correctly.
Intercooler.
LPG fumigation.
Water injection.
Electric fan instead of viscous.

I looked into this a couple of years ago and binned the idea as Kenlowe were quite emphatic that no single fan they produced would provide sufficient cooling - and I wasn't about to s$$$$ the air con so I could fit a push/pull setup !

[Sancho]

And no-one ever did tell me what it actually does, so a guess is still a guess. What about the Bobbox website? Does it go any further these days than saying 'this thing makes everything great'?

Yeah, the website also says that everything else is rubbish

I know what you mean about snake oil but Shab's figures when he fitted his would imply two things:

a) It worked. Because he went faster.
b) It basically chucks more fuel in. Because his MPG went down.

What I meant, as I was hoping to say, is that getting more fuel in there would (to my mind) go hand in hand with modifying to get more oxygen in and more exhaust out. If you can afford a re-map though, go that way. A bobbox seems to be pretty much a cheap and cheerful re-map. Some might say cheap and nasty, but not as nasty as those ebay ones.

You don't happen to have a screw you could turn on the side of your fuel pump do you??

[MattF]

Sorry to disappoint Matt, but I have to back to work and pretend to do the job they pretend to pay me for.

Gutted. You've let the side down completely with that response.

[MattF]

I looked into this a couple of years ago and binned the idea as Kenlowe were quite emphatic that no single fan they produced would provide sufficient cooling - and I wasn't about to s$$$$ the air con so I could fit a push/pull setup !

I said an electric fan, as in a proper cooling fan, not some piece of barely upto the job cr@p that vaguely resembles a fan. You stick your head under the bonnet of any vehicle with an electric fan, and even the shoddiest, cheapest excuse for a cooling fan will look more robust and suited for the purpose than those ones.

[Predictable Bob]

I bow to your superior wisdom and knowledge - can you give me some details of suppliers please ?

[MattF]

I bow to your superior wisdom and knowledge - can you give me some details of suppliers please ?

The supplier is: scr@pyard. Seriously, have a delve. You can find some corking fans, usually in the rad pile as they tend to rip the rads out to weigh in, and adapt one with a bit of effort. Get a temp switch off of a Corolla 'stat housing and you're sorted. (The Corolla temp switch cuts in at around the Surfs thermostat temp). Think the one I used was off a Vauxhall, as it was marked GM. Has a Bosch motor and alloy shroud. Get one of the sucking fans with the staggered curved blades, 15" or upwards and you're sorted.

[Apache]

You don't happen to have a screw you could turn on the side of your fuel pump do you??

Cant say I've ever looked at the 3.0 one.

I know where you're going though. I dont know whether there is any ECU control over the boost or whether it's purely mechanical. If it is mechanical, throwing more fuel in will just result in wasted fuel after a point as there wont be an increased amount of air for a stoichiowhatsit burn.

I would imagine it is only effective up to a point on the 2.4 as well, for the same reason. An adjustment of the fuel pump AND a few washers under the turbo wastegate might result in more power than the fuel pump tweak alone, but would probably result in more heat to dispense with too.

I guess there's nothing for it. I need to have a play!

A mate has been trying to sell me his old water injection kit today, and trying to convince me to fit a front mount intercooler.