Dyno plot..

[cvega666]

So, today took the car up to APTuning in Norwich to put on the rollers...

She is a rev2 running a CT20b, st205 CC, standard cat (gutted), and HKS silent hi power exhaust. Stock rev2 ecu and injectors. Boost set with MBC to .8 bar.

Not very impressed with the numbers! Running .82-.85 bar car produced 225hp among three runs. What I like is the torque - almost flat from 3250rpm to the end, topping out at about 230ft/lb.

It really felt like it had more power, but there you go... not sure what to do next! Engine can sure take more punishment, forged and stuff..

Power & TQ:


Power & Boost:

[Kongaroo]

Surely that's bang on what you would be looking for at 0.8bar? Given stock rev 3 turbos only make 240 BHP at 0.9bar?

Good result

[cvega666]

Cheers Kongaroo, hmm maybe I expected too much

I want to hear opinions of people who have more experience than me with tubbys

[g.lewarne]

id rather have your torque curve @ 220hp than 400hp with an all-or nothing torque curve mate!

its a good result!

remember, torque is what matters most, HP is just about top speed really

[Navz]

Not bad at all bud.

My standsrd rev 3 turbo engine with subtle mods (intercooler, exhaust,induction kit), and power fc is being dyno tuned next week I will post it up to give you a better idea for comparison.

[^Trickster^]

Why you running such low boost?

Graeme

[cvega666]

well that's the thing ^Trickster^ - I dont know how high can I go One of the reasons for me going to the dyno was to see what the car was doing at this boost level - safe and sound. I'm overly paranoid and this is my only car

[Driftlimits Performance]

Management, I injectors, 1.2bar, 310bhp, then big turbo, injectors, remap, 400bhp!

Go, fly my pretty!

[cvega666]

sounds like a plan to me!

[cvega666]

My standsrd rev 3 turbo engine with subtle mods (intercooler, exhaust,induction kit), and power fc is being dyno tuned next week I will post it up to give you a better idea for comparison.

There was a couple more cars on the dyno day there so I had sort of a reference..

rev3 with stock intercooler / berk exhaust = 250 hp
rev3 with CC and other mods, running 1.1 bar = 304 hp
mk3 with a turbo kit = didn't run the full run because it was WAY too lean even off boost!
mk1 SC = 150 ish if I remember correctly
mk1 stock = 109
mk1 + janspeed = 119

Hopefully the owners will come and see this thread and post their charts. was a good way to find out what the engine was doing, as I've never dynoed mine before

[Boddney]

Sorry these are not very clear but I don't have a scanner.
107.7 bhp at about 6200 rpm with a nice torque curve on a nice standard n/a Mk1 with 126000 miles and 25 years old.
It was a good morning if a little scary for a dyno virgin.




Glad you could make it Jan and for making the journey.

Bod

[mrspete]

mk3 with a turbo kit = didn't run the full run because it was WAY too lean even off boost!

The more I think about it the more confused I'm getting he could not fit the hose to my engine ?, the pipe up the exhaust only went up 6" on one of 4 outlets, how could he know I was running too lean
He basically only had the rollers to go by, how so how could he know

[cvega666]

mk3 with a turbo kit = didn't run the full run because it was WAY too lean even off boost!

The more I think about it the more confused I'm getting he could not fit the hose to my engine ?, the pipe up the exhaust only went up 6" on one of 4 outlets, how could he know I was running too lean
He basically only had the rollers to go by, how so how could he know

he put a Lambda sensor into your exhaust, to monitor the air/fuel mixture. It looked like it was running way too lean, that's why he aborted the run, to prevent any damage. Too lean = melted pistons.

[mrspete]

mk3 with a turbo kit = didn't run the full run because it was WAY too lean even off boost!

The more I think about it the more confused I'm getting he could not fit the hose to my engine ?, the pipe up the exhaust only went up 6" on one of 4 outlets, how could he know I was running too lean
He basically only had the rollers to go by, how so how could he know

he put a Lambda sensor into your exhaust, to monitor the air/fuel mixture. It looked like it was running way too lean, that's why he aborted the run, to prevent any damage. Too lean = melted pistons.

If thats the case why am I not causing an EML (Confused)

[cvega666]

That's probably a question to be asked in the MK3 section...

[sjm1984]

Get your self a electronic boost controller and up the boost with cooler grade plugs

[smokeejoe]

My mk1b with janspeed ran 110hp at around 6600rpm which i think is a good result after 23 years and 103000 miles.
Not quite as smooth a torque curve and slightly lacking in the mid range compared to bod but hopefully i can counter that with a performance air filter.





Thanks again for organising the day bod

[jon]

My MR2 made 251 bhp & 260 ft/lbs running standard boost with Aussie downpipe, Berk exhaust and Apexi intake.

Power and Torque:



Power and Lambda:



I also took ECU datalogs during the dyno runs. The log shows that the ECU is happy up until 4000rpm and then it dumps fuel and retards the ignition, presumably because it's detecting knock.



I really need to get my chargecooler fitted and see if that improves things.

[cvega666]

nice power you made jon, but you really a better cooling solution to get that knock out of the way!

also, when are you planning to get some ECU's out there?

[Phill P]

Mine made 242 at .8 bar,mods are Apexi air filter,Gizzmo ibc and Japspeed exhaust,still running with standard cat and intercooler.

Shall find a link to the dyno chart