Tuning for cheapskates

If you were going to buy bits at a time to go from stock to BPU, which order should it be done, and is changing the exhaust essential? (deaf wife, so value quietness in cabin).

Changing the exhaust is essential, and its the 1st you should do if you want to go bpu IMO

The standard system is sooooo restrictive, if you put a aftermarket exhaust and decat(plus restricor ring, unless you have a uk spec) on your soop it would unleash loads of power and your car would b much more responsive,it'll be a completely different animal i was amazed in the difference when i did mine.

you'll also need a Fcd as your likely to hit fuel cut at 1bar once you remove your standard system and cat.

You can get quiet aftermarket exhausts, but the name escapes me...i'll have a look on the net and post the names

I think this is one of those questions Gaz that doesn't really have a real answer. Personally i'd go Backbox, decats, fcd, plugs, then either boost controller or fmic. Also gauges are a worth while investment. Boost before anything else is done if you havn't yet. EGT gauge when decats could be usefull. Think if you go onto mkiv.com they list what they think.

Cheers James, never knew this bit of info (link on mkiv.com) :

Note that Greddy does not list a BCC as made for the 93-98 Supra TT. The correct Greddy BCC to use is labeled for the '90-'96 MR-2 Turbo, Greddy part # 15510006

Would a dual gauge a-pillar pod be sufficient- I'm not keen on losing the clock or air-vents, nor wish to turn my interior into a submarine littered with gauges.

Fit colder plugs first and a boost gauge if you don't already have one.

Then Decat and see what boost you're now making.

Then a FCD if now required. The Thor FCD is preferred to the GReddy one.

Next, fit a more free flowing exhaust and a FCD if not already installed.

Add a restrictor plate if boost is now too high.

Add bleed valve or EBC if boost is still not as high as you want. (unlikely on a J car)

Check fueling on a Dyno or wideband and upgrade fuel pump if necessary or just do it anyway for insurance.

Yeah, a twin or even triple a pillar pod looks good and sits out the way while still in view. You just gotta remember that you don't wanna blow the engine up, so spotting any pottential problems is always good.

Cheers Jake.

"with the bpu installed, you can expect to obtain approximately 370-410 rear wheel horsepower (rwhp). damn, you gotta love the supra tt!!"

RWHP????? I wouldn't have expected to make that at the crank!

That's american BHP and UK/US Spec turbos they're talking about. You won't make 400 RWHP from a decat in the real world

I guess your car is a Jap spec, right? (Sigs are good by the way)

yup. stock jdm, I'll edit my sig, hang on...

Cheers Jake.

 

"with the bpu installed, you can expect to obtain approximately 370-410 rear wheel horsepower (rwhp). damn, you gotta love the supra tt!!"

 

RWHP????? I wouldn't have expected to make that at the crank!

US horses are a bit weedier than our British thoroughbreds Actually the US uses a slightly different hp measurement to the UK, which is why their figures often look exagerated.

Running 1.2bar with all neccessary BPU mods, you'll be looking at around 375-400bhp at the flywheel, NOT the wheels.

You could decat and leave the original exhaust on and run say at 1.1bar. However the stock exhaust is quite restrictive, so you *may* see high exhaust gas temperatures. You could try a full decat first and add a Boost and Exhaust Gas Temperature gauge, so you can monitor things.

A more free flowing aftermarket exhaust will allow the turbos to spool up a bit quicker and make the car more responsive, although it will also be a lot noiser. Suggest you try to get a ride in a decatted Supra with an exhaust fitted and see if you can live with the noise.

ie.

1. Fit decat pipes, FCD, Boost and EGT gauge, cooler plugs and bleed valve.

2. This should raise the boost, if you need to raise higher then you could fit a bleed valve.

3. Monitor exhaust temps, if running high fit a back box or full cat back system.

try to get a ride in a decatted Supra with an exhaust fitted and see if you can live with the noise.

I put one of my cats back on for the MoT test but the car was so quiet and felt so sluggish I couldn't wait to take it off again.

Nobody ever does iWas just kidding anyway mate.

Sarky comment edited out now.

Gaz have you been out in a Decated Sup yet?? If not i'll take you out for a spin sometime

Not yet- I've gone in a Vortex single though.

How rude of me- thanks for the offer- I'll take you up on that!

Not yet- I've gone in a Vortex single though.

who's car mate? Wanna try mine?

who's car mate? Wanna try mine?

Can't remember- red with a trial rear bumper.

Would love to go for a blast in yours! I work nights in Watford, so shouldn't be too hard to meet up on an early morning, or evening????

Can't remember- red with a trial rear bumper.

 

Would love to go for a blast in yours! I work nights in Watford, so shouldn't be too hard to meet up on an early morning, or evening????

Ah Adams, thats a budget single on stock 440's.

anytime mate TBH, just give me some notice.

Weekends any good for you?

Weekends any good for you?

Yeah usually. Tomorrow PM is cool.

Gaz just emailed over my mobile # matey

Strange- I haven't got any pm's or e-mails....

I've got to go to work now, I'll check up on this about 8ish tonight!

Cheers Terry!

Gaz

Gaz if you still want a ride in a car not quite the beast Terry's is then i have a week off from Thursday.