Boosting 01+ cars
08-26-2009, 11:55 AM
#21
A couple of things:
- the VVT cam has a different profile from other Miata intake cams. Much shorter duration. Locking it at a particular point will not be the same as using a 1999-00 cam.
- there are definite gains to be had from controlling the VVT, especially in spool. Why didn't Mazda use it on the MSM? Who knows. Could be that it was simply too much work to get the ECU certified for emissions on such a short-run model.
- the VVT cam has a different profile from other Miata intake cams. Much shorter duration. Locking it at a particular point will not be the same as using a 1999-00 cam.
- there are definite gains to be had from controlling the VVT, especially in spool. Why didn't Mazda use it on the MSM? Who knows. Could be that it was simply too much work to get the ECU certified for emissions on such a short-run model.
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12-19-2009, 04:52 PM
#22
/thread revival
im researching alot before i post, i thought this thread would answer my question, close but no
first off is anyone CURRENTLY running or HAVE ran a VVT engine w/ Piggyback setup? [xede, voodoo box, etc]
i have a few questions and am lost
all i want is 200whp
Atlanta= low altitude and 93octane FTMFW!
i hear much more than 200hp on piggyback will result in BOOM??
i still don't fully understand VVT or engines for that matter
but i don't want BOOM, nor be close to it, nor want to buy an FM2, nor Hydra, and pass emissions!
*this is NOT a DD or race car
just occasionally for ******* with douchebags in mustangs and various ricers on the freeway
im researching alot before i post, i thought this thread would answer my question, close but no
first off is anyone CURRENTLY running or HAVE ran a VVT engine w/ Piggyback setup? [xede, voodoo box, etc]
i have a few questions and am lost
all i want is 200whp
Atlanta= low altitude and 93octane FTMFW!
i hear much more than 200hp on piggyback will result in BOOM??
i still don't fully understand VVT or engines for that matter
but i don't want BOOM, nor be close to it, nor want to buy an FM2, nor Hydra, and pass emissions!
*this is NOT a DD or race car
just occasionally for ******* with douchebags in mustangs and various ricers on the freeway
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12-19-2009, 05:51 PM
#23
2 Props,3 Dildos,& 1 Cat
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you can run more than 200 rwhp on an 01+ and not go boom. just dont abuse it. I'm running about 250 rwhp. and have been for a while. I dont drag the car and I dont go nuts. Stick to 7 or 8 psi on something like a 2860 with a conservative tune and it'll be fine for a long time.
My stock ecu does the VVT in my piggyback setup.
but there's no reason you can't have the adaptronic do it. I believe Prospero just got his setup to work right.
or unplug the VVT and leave it at full retard. you'll lose some low end but it'll work great at high rpm.
My stock ecu does the VVT in my piggyback setup.
but there's no reason you can't have the adaptronic do it. I believe Prospero just got his setup to work right.
or unplug the VVT and leave it at full retard. you'll lose some low end but it'll work great at high rpm.
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12-20-2009, 07:32 AM
#27
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Join Date: May 2006
Location: ITALY - SAN BENEDETTO DEL TRONTO
Posts: 47
Total Cats: 0
Hi,
i just turbo'ed my 2004 vvt (cam) 1.8.
I noticed that the pressure rise up a lot above 5-5500 rpm.
When i was testing i thought having regulated at 6 psi because until 4500 rpm it was stable, but approaching 5500 rpm it went up to 12 psi!!!
Now i regulated it best for maximum 6 psi until 7000 rpm and is good (non intercooled yet) and from 2500-3000 rpm you get 5-6 psi continuous until rev limiter
Hope this can help a bit.
Obviously is with vvt activated.
bye
i just turbo'ed my 2004 vvt (cam) 1.8.
I noticed that the pressure rise up a lot above 5-5500 rpm.
When i was testing i thought having regulated at 6 psi because until 4500 rpm it was stable, but approaching 5500 rpm it went up to 12 psi!!!
Now i regulated it best for maximum 6 psi until 7000 rpm and is good (non intercooled yet) and from 2500-3000 rpm you get 5-6 psi continuous until rev limiter
Hope this can help a bit.
Obviously is with vvt activated.
bye
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12-21-2009, 12:20 PM
#30
Former Vendor
Join Date: Jun 2006
Location: Bell Tuning & Performance
Posts: 1,337
Total Cats: -99
I have many, many, cars running in excess of 250 whp on stock motors, with an Xede. Some daily drivers, some DDs with autocross use. Some track cars. My car (when not testing other stuff) runs 11-12 psi and 240-250 whp. It is a daily driver. You can easily do 200 whp+ on a piggyback or Interceptor style tuning device. That said, you must tune it properly and have good AFR's under boost. As long as you have GOOD fuel and timing control, 250 whp is easy as pie.
With a piggyback or Interceptor style tuning device, the stock ECU still controls the VVT.
Stephanie
With a piggyback or Interceptor style tuning device, the stock ECU still controls the VVT.
Stephanie
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06-08-2010, 01:13 AM
#32
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ran 211whp @ 10psi for 1.5 years with powercards running richer then i would like, ragged on it hard in every gear. tracked it 10 times and never had a problem tell i decided the car was to nice to gut so i got a ugly car to gut and part swap and got the right year this time.
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