Fast & Furious Inspired MR2 Roadster LT Project

[roadsteralex]

i filled in contact form on the website, no reply

Exhaust final look

 

[roadsteralex]

Personal best so far

 

[StephenMcC]

Was good seeing you and the car this weekend at JPCCNI, pretty sure you stole the attention of the outside spots!

 

[roadsteralex]

Was good seeing you and the car this weekend at JPCCNI, pretty sure you stole the attention of the outside spots!

Thank you!

I always like people coming over and having a chat

 

[roadsteralex]

Another day, a little better time

Still need -0.34s

 

[roadsteralex]

Update

 

[Boydie]

Some light weight seats would do the trick from experience

 

[roadsteralex]

Hey all!

Have done new dyno figures!

337.4 whp / 364.7 bhp at 7107 rpm
255.52 lbft (wheels) / 271.24 lbft at 5623 rpm

 

[roadsteralex]

 

[roadsteralex]

Hey everyone is has been a few months!


So…..

I’m upgrading power, 365hp ain’t enough… looking near 500.
Ecu broke (my fault maybe? Maybe not) got a new one and we are road tuning right now

I fitted my old tail lights


For 2024:
- APR Wide Bodykit
- Subaru rear wing
- More upgraded suspension parts inc new subframe, custom arms etc
- interior nicely done
- swapping OMP bucket seat for OMP recliner
- Swapping Tiny steering wheel for a flat bottom oem Toyota, maybe GT86?
- custom front fenders
- custom bonnet vents


And a lot more!

 

[roadsteralex]

We did more tuning today….
10 psi spring
No boost controller

 

[Tufty]

Nice work.

I will be keeping an eye for this around town.

 

[roadsteralex]

we went to torquetronix today

My tuner isn’t happy because they only got a 7055 rpm rev on sheet not 7500.

My tuner said the 388whp is way too low as well, my car has an 8% drivetrain loss from what we know which should be 422 not 415.

Then my tuner said if we revved right it should be way over 400whp (432bhp based on 8%) as bare minimum


All logs are spot on for a street tune.
Now I’m going to improve my cooling system as my intake temps are still too high (maybe air bubble?) when those are down and all we are going back to Bradley motor works for turning session using their dyno as that’s what I had on my old dyno.

Additional to this, they said my car kept wheel spinning on the dyno hence the low(er) read out?

Anyway let’s say it’s 388whp.

That’s 51whp more with 5 psi less boost pressure (10 psi vs 15) which doesn’t sound bad at all to me?

Let me know what you think

 

[roadsteralex]

Corrected figures

 

[gary1365]

Is it using a water to air charge cooler. Surely the charge temps won’t be affected by the cooling system if you’re using an air to air inter cooler.

 

[roadsteralex]

Is it using a water to air charge cooler. Surely the charge temps won’t be affected by the cooling system if you’re using an air to air inter cooler.

That’s why I think I have a air bubble.

Using W2A indeed

 

[gary1365]

That’s why I think I have a air bubble.

Using W2A indeed

Makes sense I though you would with it being an mr2

 

[Gambit]

i seen that Stav-Tech on youtube is doing a series on their VAG 1.8T conversion into MR2 - might be food for thought for you also if you reach the limit on k20 or blow it up

 

[roadsteralex]

i seen that Stav-Tech on youtube is doing a series on their VAG 1.8T conversion into MR2 - might be food for thought for you also if you reach the limit on k20 or blow it up

Yeah I know but I don’t like VAG lol

K20 has an unlimited power see boostedboiz

 

[mikey]

Why isn’t the car reaching the required RPM? Is there an airflow issue somewhere as in intake pipe/manifold can’t flow enough air?

 

[roadsteralex]

Why isn’t the car reaching the required RPM? Is there an airflow issue somewhere as in intake pipe/manifold can’t flow enough air?

it did because we have logs , we recorded our own logs on the dyno.

However torquetronix cut off the dyno 500 rpm to early
Before that it was slipping on the dyno

 

[mikey]

it did because we have logs , we recorded our own logs on the dyno.

However torquetronix cut off the dyno 500 rpm to early
Before that it was slipping on the dyno

Odd why they didn’t take it to the limiter or at least stop when the figures stopped climbing. Did they stop short because of the IATs?

 

[roadsteralex]

Odd why they didn’t take it to the limiter or at least stop when the figures stopped climbing. Did they stop short because of the IATs?

IAT was still fine plus they can’t see that only I can on my laptop
I don’t know why they said “we normally stop early so there is no dip” but was bit too early

So we ran the log through our dyno and we came up with the figures I posted after


We used this before and we were only 5whp off

It also gives us a full rpm range not just 7055 rpm

 

[roadsteralex]

Few changes, let’s start with the most important: performance.

After a lot of testing I found out that my pump for w2a was not working properly, this may have been one of the reasons why I wasn’t happy with the intake temps.

So far I have changed the whole w2a system as well as routing but still wasn’t happy.

Instead of getting the same pump I got a very very expensive Davies Craig pump with controller and all that!

Mainly because I’m paranoid

While I was doing that I decided to go even further and change my water to air intercooler as well for a smaller one.

Reason for the smaller one is hoping it will fit in (or almost in) in my engine bay instead of at the side which may help the bleeding process as well.

Switching from 3” + 2.5” piping to 2x 2.5”.
Shorter piping and slightly easier to work with hopefully

Which will (hopefully) allow for a pipe from the turbo straight to the side vent where the most cold air is.

Which i also had to reduce from 4” to 3.5” (no big deal as cold air is more important)


I’m still waiting for few parts to test my new theory.


Oh and I got a big wing for testing purposes

Pics added, engine pic is mainly to show where I would like the turbo to feed air from

 

[roadsteralex]

I had a little crash on ice…. So I upgraded my whole w2a intercooler system with a bigger heat exchanger but smaller IC at the back, however shorter piping!

Bigger w2a pump.

Fitted 6 adjustable arms at the back
Front lower brace fitted
Got new stock rear bumper and front bumper.
Moves arches slightly so we can design the new side skirts!

Pics added of the process