Liam's Z4C race car project

Liam22 · Post by **Liam22** » Wed Apr 06, 2022 4:01 pm

Interesting. I've had advice not to increase the rev limit. Can't remember why - I think it was a Valvetronic or VANOS limitation. I know some people have deleted some of these parts, or locked the Valvetronic wide open. FWIW, 290bhp is as far as I want to go without pushing me up a class.

Ed Doe · Post by **Ed Doe** » Wed Apr 06, 2022 4:37 pm

I had my old 3.0si remapped, with the rev-limiter raised to about 7500rpm. I had it dyno'd, and whilst the peak numbers were a bit iffy (247bhp IIRC), peak power was at 7,400rpm from memory, nice smooth line up to that point, which is the most important thing. Not sure if it was starting to tail off after 7400 due to the soft limiter these cars have but yeah mine did 15k and several trackdays with no issues, sold it on about 105k miles in the end, still going strong!

Liam22 · Post by **Liam22** » Thu Apr 07, 2022 10:58 am

Thanks Ed, that's good to know.

Completed the MILVs fitting and ran the engine for a few minutes last night. Didn't throw any codes, and I didn't hear anything rattling about in the engine! It's booked back on the rolling road for a power run next Wednesday so we'll see what benefit this brings (without a tune).

1536Z4 · Post by **1536Z4** » Thu Apr 07, 2022 8:35 pm

Liam22 wrote: ↑Thu Apr 07, 2022 10:58 am see what benefit this brings (without a tune).

Good to hear no issues after fitting . Must have been a bit of a heart in mouth moment . Those results will be interesting to see as there seems to be some debate on whether you get any gain without the tune for the MILVs .

Liam22 · Post by **Liam22** » Wed Apr 13, 2022 4:37 pm

Rolling road says that the MILVs have cost about 5bhp across the board. Peak power is the same, but torque is down everywhere.

Racing at Snetterton on Saturday so will be interesting to see what it's done to vMax and if the ECU adapts during the day.

And still waiting for a refund from Superchips

enuff_zed · Post by **enuff_zed** » Wed Apr 13, 2022 5:23 pm

Almost forgot you were going to be at Snetterton. I'll see if I can get there. That straight will certainly be a test of the engine power, though I think it's a little slower these days since they put all the new bit in. Not quite the same run at it.

1536Z4 · Post by **1536Z4** » Wed Apr 13, 2022 7:38 pm

Liam22 wrote: ↑Wed Apr 13, 2022 4:37 pm And still waiting for a refund from Superchips

I cant seem to find your post about Superchips apart from this :" I also have a Superchips tune to try but wasn't able to apply it today." Would it not work ?

Liam22 · Post by **Liam22** » Wed Apr 13, 2022 7:45 pm

Well, I applied it and it was identical to the OEM map. I was then promised a new file which never arrived. I returned the PowerGate device last week.

enuff_zed · Post by **enuff_zed** » Thu Apr 14, 2022 5:40 pm

Liam22, can't make it to see you on Saturday, sorry. Got one, possibly two viewings of the 2.5si I have for sale.
Good luck mate. Hope it goes well.
I'll be able to hear you from my house anyway.

Jahmez · Post by **Jahmez** » Thu Apr 14, 2022 8:36 pm

Liam22 wrote: ↑Wed Apr 13, 2022 4:37 pm Rolling road says that the MILVs have cost about 5bhp across the board. Peak power is the same, but torque is down everywhere.

Racing at Snetterton on Saturday so will be interesting to see what it's done to vMax and if the ECU adapts during the day.

And still waiting for a refund from Superchips

How much notice can you give regarding the races you'll be entering this season? Would love to come and watch but I'm in Scotland and have to really plan time off from work. Nice car by the way.

Liam22 · Post by **Liam22** » Thu Apr 14, 2022 8:49 pm

This is my plan for the season but I don't commit to each race until 2-3 weeks before.

Code: Select all

16-Apr	Clubsport Trophy	Snetterton 300
20-May	Clubsport Trophy	Silverstone GP
28-May	750MC Roadsports	Croft
25-Jun	Clubsport Trophy	Oulton Park
20-Aug	Clubsport Trophy	Brands Hatch Indy
25-Sep	Clubsport Trophy	Donington Park National
16-Oct	Clubsport Trophy	Silverstone International

1536Z4 · Post by **1536Z4** » Sun Apr 17, 2022 10:36 am

Liam22 wrote: ↑Thu Apr 14, 2022 8:49 pm 16-Apr Clubsport Trophy Snetterton 300

That was so close . Kept up really well against the M3 engine . Great stuff

For those that want to see the race view here from 5:47:00 . https://www.youtube.com/watch?v=6rjnABXAU3g

enuff_zed · Post by **enuff_zed** » Sun Apr 17, 2022 10:44 am

1536Z4 wrote: ↑Sun Apr 17, 2022 10:36 am For those that want to see the race view here from 5:47:00 . https://www.youtube.com/watch?v=6rjnABXAU3g

I must be doing something wrong?
Can't find Liam's race, just millions of minis and MX5s ?

1536Z4 · Post by **1536Z4** » Sun Apr 17, 2022 10:49 am

enuff_zed wrote: ↑Sun Apr 17, 2022 10:44 am I must be doing something wrong?

Its right towards the end . Just in case its at 5 hours 47 minutes not 5 mins 47 seconds

enuff_zed · Post by **enuff_zed** » Sun Apr 17, 2022 1:15 pm

1536Z4 wrote: ↑Sun Apr 17, 2022 10:49 am
enuff_zed wrote: ↑Sun Apr 17, 2022 10:44 am I must be doing something wrong?
Its right towards the end . Just in case its at 5 hours 47 minutes not 5 mins 47 seconds

Cheers, found it.
Don't think it had all loaded properly.

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