Stock 4age with 3sgte injectors????

[BZG Wagon]

Get a front mount i/c


I was told by a mechanic at Toyota that 4age's run incredibly rich at full throttle, to protect the motor from melting (hence the big black clouds of smoke behind the car when you're gunning it). So I'd be surpised if you needed new injectors on a standard motor. And wouldn't the ecu adjust the mixture back to stock anyway?

I'd go the exhaust & manifold route, plus a pannel filter to begin with.

You could also make your car faster by:
1) Buying bigger brakes (my 4age wagon had shitty brakes - worst thing about that car)
2) New springs & shocks

[Bling]

FMIC on a n/a car? not sure if serious...

[1I1]

Yeah it cools the intake temp so it's more dense therefore counter acts extra fuel added by 3SGTE injectors = more hp

[Bling]

[Al]

Nitrous.

[h8wrxs]

get rid of the 3sgte injectors and install vtec

repco sells it as a kit... honest, go ask them

[BZG Wagon]

FMIC on a n/a car? not sure if serious...

Yeah man it's all the rage right now.

If you can't make it fast, make it look fast

[matt dunn]

Yeah Toyota figures are interesting 3hp difference between silver and blacktop doesn't quite add up when you race side by side. Average silvertop getting high 15s and average blacktop getting low 15s.

That's only a peak figure though.

At 7700rpm they may be that close,

it lower in the rev range that the BT is miles ahead over the ST.

[iOnic]

install a link, get it tuned.

This ^
More gains to be had there than in just about any other part

[Adamal]

install a link, get it tuned.

This ^
More gains to be had there than in just about any other part

Apart from say, a turbo

[iOnic]

A turbo alone won't do a whole lot And power isn't in the turbo it's in the tuning to make use of said turbo.

[RedMist]

install a link, get it tuned.

This ^
More gains to be had there than in just about any other part

Ummmmmm how?
This is one of the misconceptions I have an issue with. How does swapping out a map that must have taken Toyota many months of programing and testing with something that you program in a day create this magical gain?
If the fuel air mix is correct then you might be able to lean the mix a little at the cost of longevity but I can't see massive gains through installing a link. My silvertops with a tuned exhaust, Massive K&N, Link, no AFM, running on avgas pulled 125 and 127hp at the wheels. My Blacktop 132. I don't think it's a massive advantage over stock.... if any advantage.

HOWEVER. If you have mods that alter the BSFC then you'll not only benefit from an aftermarket ECU, but you'll NEED one.

[KIPH8N]

get rid of the 3sgte injectors and install vtec

repco sells it as a kit... honest, go ask them

hahaha nice one.. i hate vtec lol

[KIPH8N]

Yeah Toyota figures are interesting 3hp difference between silver and blacktop doesn't quite add up when you race side by side. Average silvertop getting high 15s and average blacktop getting low 15s.

That's only a peak figure though.

At 7700rpm they may be that close,

it lower in the rev range that the BT is miles ahead over the ST.

i agree..my st is slow as a slug till 4000rmp..fast shift to 2nd on redline it starts smoking..

[KIPH8N]

A turbo alone won't do a whole lot And power isn't in the turbo it's in the tuning to make use of said turbo.

yah but to turbo it i will need alot of parts..like after market intake plenum..coil packs..4agze pistons.. waste gate..bov.. inter cooler..ecu..turbo..fuel regulator..would need the crankshaft grounded for os bearings..wont that be too much work..?

[iOnic]

This is one of the misconceptions I have an issue with. How does swapping out a map that must have taken Toyota many months of programing and testing with something that you program in a day create this magical gain?

It's not a misconception. I've tuned several Toyotas (among others) and in most cases there have been good gains to be had in terms of power, torque, driveability, transient response and fuel economy. You have to realise that Toyota's goal was not to provide you with blistering performance. The factory ECU is programmed to protect the engine at all costs, run on a wide variety of fuel octanes under a wide variety of conditions and make it last 20+ years. If you get good performance and economy then that's a bonus.

It does that through overly rich fuel maps and very conservative ignition maps coupled with many layers of fail-safes. It's pretty much the only way of making sure that the same engine that carts grandma to the shops in her Trueno will hold together towing a (small ) trailer up a hill in a Carib and won't throw a wobbly if nana puts 91 in it.

I can't think of any other "mod" that will give you all those gains in one step like an ECU that is tuned with that specific goal in mind. That and it means you can get it retuned to make the most of every new addition you make in the future rather than just piling parts on and changing how the engine "breathes" without making any changes to the mapping to take advantage of that...

[Quirky]

There are some dyno results of clubman guys doing tuning on their 4ags.
Good reason for using the 4ages...their cheap.

[matt dunn]

Also Jap spec 4AG ECU's are programmed for their good fuel,
not the shit stuff we get here,

and so are running on the knock sensor all the time and never run anywhere near enough advance,
always running retarded.

[Bling]

Even on 98?

[Flannelman]

Adding more fuel to an already over fueled fire will result in loss of power.

Don't do it.

To add more air, restrict exhaust/intake and opt for a slightly longer duration cams, no more than 270 degrees on stock ECU so im told.

Tunable ECU is future proofing other modifications, like engine rebuild for more revs, forced induction or both.

In 4age engines, the people ive talked to have said that throttle response and bottom to mid range torque has improved noticeably and even though the kW figure was raised 3-5kW all said it was worth the expense. These engines had no engine modifications, with some the usual exhaust and intake work carried out.