The ECU controls things if you don't feel like buying software (the reprogram works just fine if you want to keep all of the HP), but it's not like a total loss. With the Sky Redline, the exhaust gave it a 21hp bump. ~1000 miles later, it was 6hp, then, ~1000 miles after that, it was 14hp, ~1000 miles after that, it was 16hp, ~1000 miles after that, it was 15hp, all corrected for ambient. Stabilizing on 14-16hp is not bad at all, eventhough it didn't hold the peak of 21hp. This is on a DynoDynamics dyno, which tends to be a bit more conservative than a Mustang, which in turn tends to be much more conservative than a DynoJet. The intercooler upgrades tend to show a smaller adjustment, since the engine is showing just a cooler charge air temp instead of more flow on the exhaust side.
The ECU controls things if you don't feel like buying software (the reprogram works just fine if you want to keep all of the HP), but it's not like a total loss. With the Sky Redline, the exhaust gave it a 21hp bump. ~1000 miles later, it was 6hp, then, ~1000 miles after that, it was 14hp, ~1000 miles after that, it was 16hp, ~1000 miles after that, it was 15hp, all corrected for ambient. Stabilizing on 14-16hp is not bad at all, eventhough it didn't hold the peak of 21hp. This is on a DynoDynamics dyno, which tends to be a bit more conservative than a Mustang, which in turn tends to be much more conservative than a DynoJet. The intercooler upgrades tend to show a smaller adjustment, since the engine is showing just a cooler charge air temp instead of more flow on the exhaust side.
- Jul 17, 2004
- 5,122
- 52
- 91
Either one of you guys have any idea what the BSR tune means by "enables launch control on manual equipped vehicles"? Is it a function of the traction control system that keeps you from blowing through tires on a hard (4500 rpm+) launch? I also see you guys say the BSR tune gets corrected by the ECU and throws check engine, but I haven't seen this mentioned anywhere on skyroadster and there seem to be quite a few people running it.
Through use of the BSR tune, a new IC, IC piping, an exhaust (is the stock one that restrictive, I don't like the bumblebee sound the others give off), and maybe the ported TB that I can get it comparable to seat of the pants feeling vs. the vette I'm getting rid of. (Bone stock C5, 298 to the wheels, ~200lb heavier)
One slightly off topic thing: Why isn't solstice forum and skyroadster combined (they do have a combined ownership don't they?). You could have a Kappa general, kappa technical, kappa performance and then you could have car specific sections: e.g. corvette forum and each different generation (c4,c5,c6) and then "general corvette"
Through use of the BSR tune, a new IC, IC piping, an exhaust (is the stock one that restrictive, I don't like the bumblebee sound the others give off), and maybe the ported TB that I can get it comparable to seat of the pants feeling vs. the vette I'm getting rid of. (Bone stock C5, 298 to the wheels, ~200lb heavier)
One slightly off topic thing: Why isn't solstice forum and skyroadster combined (they do have a combined ownership don't they?). You could have a Kappa general, kappa technical, kappa performance and then you could have car specific sections: e.g. corvette forum and each different generation (c4,c5,c6) and then "general corvette"
The launch control is a secondary limiter. Basically, you clutch in, put it in first, floor the throttle, the program keeps the rpm's in 1st there at around 4500. Dump the clutch and off you go.
Be sure to run a few dynos before and a few dynos after you get the BSR tune. About 5-7 runs in a row each time should give you a good picture of how the car is performing on a nice, though relatively short, little workout.
Mermaidman
Diamond Member
- Sep 4, 2003
- 7,987
- 93
- 91
This was my first Redline:
http://www.flickr.com/photos/7479294@N07/1395185611/
I would be so all over this GM deal if the Sky had a usable trunk like the Miata. Mazda also has 0% financing, but unfortunately excludes the power hardtop model that I want. I just can't win . . .
http://www.flickr.com/photos/7479294@N07/1395185611/
I would be so all over this GM deal if the Sky had a usable trunk like the Miata. Mazda also has 0% financing, but unfortunately excludes the power hardtop model that I want. I just can't win . . .
The weight distribution is 52/48 on these cars. We were able to get some pretty good power out of the cars with bolt-ons + a tune. For the tuning, we werent able to see the results we wanted with HPTuners so we worked with PC to re-write the entire ECU rather than reflashing through the OBDII port.
The results were:
+6-20whp exhaust
+7-9 whp downpipe
+15-20whp intercooler
+2 cold air intake
+25 ecu tune
The results were:
+6-20whp exhaust
+7-9 whp downpipe
+15-20whp intercooler
+2 cold air intake
+25 ecu tune
Hi Shabby. good to see you on other forums other than sol and sky.
Initial hp gained with our bolt ons are there and YES, the ECU DOES adjust. Thats why we list the lowest number and the highest number. For example, you probably know that we do our "1000 mile tests". We dyno the car before an install, dyno it after, drive 1000 miles, dyno, drive 1000 miles, dyno, etc. (4 times). The exhaust gained a max 20whp but after 1000 miles of driving it only showed a 6whp gain over stock. The next dyno session after a 1000 mile run, we were able to get 14whp over stock. The next 1000 mile session showed the same 14whp. Take note that we DID NOT modify or adjust the wastegate as that is a BIG NO NO. You really DONT want to do anything that will change how the ecu controls boost, etc. You WILL get CEL and problems down the line. We have redlines that have over 80 dyno runs that show no loss over stock whp. We worked for several months to gain access to ALL tables of the ECU. We were able to get it and we re-write all the torque tables. This allows for an additional 25whp.
Originally posted by: Mermaidman
This was my first Redline:
http://www.flickr.com/photos/7479294@N07/1395185611/
I would be so all over this GM deal if the Sky had a usable trunk like the Miata. Mazda also has 0% financing, but unfortunately excludes the power hardtop model that I want. I just can't win . . .
http://youtube.com/watch?v=3CA4ESo25vs
Its hard to compare mazda and gm when it comes to a car like this. GM did something good with the sky/solstice but its still a few steps back from what Mazda has in the Miata. The sky is not as refined and has its issues here and there. Even so, I just couldnt see myself in a Miata.
Mermaidman
Diamond Member
- Sep 4, 2003
- 7,987
- 93
- 91
I love my CRV. It's reliable, gets good mpg, has plenty of features, and it's comfortable. It's just underpowered and it's not fun to drive at all.
It's just a thought I probably won't act on. I think I owe around $21K on the CRV; I doubt I'd get that in trade...it has about 8500K miles on it.
Originally posted by: iamwiz82
Originally posted by: RPIpower
Hehe, do I know you from the bmw forums?
I dont think so. I lurk there more.
Ah ok. Exhaust is in the works for the Z4M but its going to be a while before its released as we do the same 1000 mile/dyno thing on each car we develope product for. The sky redline is a good alternative to the Z4M if you can get past the fact that its a Saturn, the interior, the plastic, the random vibrating noises inside, etc. Performance wise, the power/weight ratio would favor a modified sky redline. We are able to get similar whp on our modded sky redline as we do on our Z4M project car with intake, exhaust, tune. The Z4M is a few hundred lbs heavier though.
Originally posted by: RPIpower
Originally posted by: iamwiz82
Originally posted by: RPIpower
Hehe, do I know you from the bmw forums?
I dont think so. I lurk there more.
Ah ok. Exhaust is in the works for the Z4M but its going to be a while before its released as we do the same 1000 mile/dyno thing on each car we develope product for. The sky redline is a good alternative to the Z4M if you can get past the fact that its a Saturn, the interior, the plastic, the random vibrating noises inside, etc. Performance wise, the power/weight ratio would favor a modified sky redline. We are able to get similar whp on our modded sky redline as we do on our Z4M project car with intake, exhaust, tune. The Z4M is a few hundred lbs heavier though.
When should we expect something for the facelifted 06+ Non-M Z4's ? All you have is the intake scoop for it, and thats it. Correct ?
Originally posted by: Srfrbum
Originally posted by: RPIpower
Originally posted by: iamwiz82
Originally posted by: RPIpower
Hehe, do I know you from the bmw forums?
I dont think so. I lurk there more.
Ah ok. Exhaust is in the works for the Z4M but its going to be a while before its released as we do the same 1000 mile/dyno thing on each car we develope product for. The sky redline is a good alternative to the Z4M if you can get past the fact that its a Saturn, the interior, the plastic, the random vibrating noises inside, etc. Performance wise, the power/weight ratio would favor a modified sky redline. We are able to get similar whp on our modded sky redline as we do on our Z4M project car with intake, exhaust, tune. The Z4M is a few hundred lbs heavier though.
When should we expect something for the facelifted 06+ Non-M Z4's ? All you have is the intake scoop for it, and thats it. Correct ?
We have the ram air, skid plates and ecu tune. Some people on bimmerfest.com and zpost have the ram air on the non-m cars but I dont know which model works and which one doesnt.
Originally posted by: RPIpower
Hi Shabby. good to see you on other forums other than sol and sky.
Small world... now pass me that software that allows you to edit the ecm
Or at least send me some pics of what the torque/boost and any others tables look like.
Originally posted by: shabby
Originally posted by: RPIpower
Hi Shabby. good to see you on other forums other than sol and sky.
Small world... now pass me that software that allows you to edit the ecm
Or at least send me some pics of what the torque/boost and any others tables look like.
Haha, we invested $10k to have the ecm cracked. We CANT pass that out.
I can assure you that there is no loss of power with our bolt ons though. Saturn dealerships alone have sold almost 100 exhausts and intercoolers w/ no complaints.
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