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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 02-02-2004, 01:06 AM   #11
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3.4 with 1 size smaller belt gave me about 10.5 to 11 boost. Rockers dropped my boost to about 9.5 to 10. i get about 5 KR at WOT in 3rd gear and about 2 KR in second. I think this is PCM induced as my actual KR count is 0. I put my 3.25 on for a bit and KR was huge 9+ even with rockers. I tried 3 range cooler plugs and still getting the KR with my 3.4. Again I think it is PCM induced and nothing I can do about it until I get chipped.
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Old 02-02-2004, 01:16 AM   #12
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My 3.4 with new gatorback pegs the boost gauge at +10. Can't wait for headers, rockers, DHP. Do you guys think it'* better ro run the 3.1 to get more boost, or 3.2 and advance the timing? Which you think is safer?
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Old 02-02-2004, 07:56 AM   #13
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Quote:
Originally Posted by TaylorD
My 3.4 with new gatorback pegs the boost gauge at +10. Can't wait for headers, rockers, DHP. Do you guys think it'* better ro run the 3.1 to get more boost, or 3.2 and advance the timing? Which you think is safer?
With a 3.2 and advanced timing you will be able to get more out of the car because adding one degree of timing doesn't induce as much KR as changing the pulley size .1". The problem is having adjustable timing isn't cheap, you either have to get a ICCU and a PCM reprogrammed for it, or you have to get a happy **** and have your PCM reprogrammed for it, or you have to get a MAFT+ which is like $300. So, the cheaper route would be a 3.1 pulley (assuming you can run it with no KR, because I'm not sure you will be able to), but you MAY be able to make more power with the 3.2 & more timing, but it will take some precise tuning and a considerable amount of money.

Shawn
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Old 02-02-2004, 10:57 PM   #14
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Just received some clarification directly from Zoomer.
He says:

[/quote]If you are doing rockers and 94 octane then a 3.25 is your best bet. That'* the smallest you can go w/o an intercooler or cam.
Quote:
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Old 02-03-2004, 12:19 AM   #15
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Quote:
Originally Posted by 2000SilverBullet
Just received some clarification directly from Zoomer.
He says:
If you are doing rockers and 94 octane then a 3.25 is your best bet. That'* the smallest you can go w/o an intercooler or cam.
Quote:
[/quote]

No offense to Zoomer but a 3.25 with rockers and a mix of 94 and 100 octane gives me 9+ KR. I think your going to need headers and a PCM burn to run a 3.25 effectively. The PCM is the tricky part. The Bonneville PCMs are so different than a GP PCM. You may be able to get 0 kr with that setup on a GP but doubtful on a Bonnie.
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Old 02-03-2004, 01:12 AM   #16
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I agree PCM tuning for us is difficult. What you and Scott cooking up for your PCM? Do they have code writen already or do they still need to break it down for us. I assume that they've got a couple codes laying around due to scotts car, but far more advance mods than most of us will ever have.

I live close to Mike Breyer (programmer for DHP) he said that when I'm ready he want'* to go through all the code. I have no problems with that. Said he'* come up with a way to get ride of Tourque management in the 04 GP'*, figures he can figure it out for us too. Also want'* to get more feature'* on the DIC. Probably go to his house so he can code read than come back to the shop for final dyno tuning.

Thanks for the Pulley size info, I'm hoping to be able to run a 3.2 with rockers headers DHP and HVTB Stage 2. Don't really want to get into an ICCU or happy **** yet. Hoping these mods will work out well and I'll drive it for a while, once the miles get up there and the tranny goes, than I'll get more serious.
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Old 02-03-2004, 02:10 AM   #17
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Quote:
I agree PCM tuning for us is difficult. What you and Scott cooking up for your PCM? Do they have code writen already or do they still need to break it down for us. I assume that they've got a couple codes laying around due to scotts car, but far more advance mods than most of us will ever have.

I live close to Mike Breyer (programmer for DHP) he said that when I'm ready he want'* to go through all the code. I have no problems with that. Said he'* come up with a way to get ride of Tourque management in the 04 GP'*, figures he can figure it out for us too. Also want'* to get more feature'* on the DIC. Probably go to his house so he can code read than come back to the shop for final dyno tuning.

Thanks for the Pulley size info, I'm hoping to be able to run a 3.2 with rockers headers DHP and HVTB Stage 2. Don't really want to get into an ICCU or happy **** yet. Hoping these mods will work out well and I'll drive it for a while, once the miles get up there and the tranny goes, than I'll get more serious.
Sort of what I was thinking too.
I was contacted by DHP and they have a basic one for us.
Zoomer is not recommending the HyperTech over the DHP.
The DHP has the following features which is more extensive than the HyperTech programmer.
FEATURES:
Speed limiter removed
3-1 and 4-2 skip shifts
Transmission line pressure increased --- not supposed to conflict with the Intense shift kit.
Shift points moved (5800-6000rpms)
Fan turn on points altered as follows:
186 degree F turn on
2 minute fan on at key-off (this feature activates when engine coolant is 179 degrees or greater)
MAF calibration adjusted for proper year

Fuel/spark adjustments as follows:
Enrichens fuel delivery for critical problem areas
Provides a consistent power gain across the entire power band
Reduces spark retard (knock retard)
Removes "40MPH WOT lag"
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Old 02-03-2004, 10:12 AM   #18
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Quote:
Originally Posted by 2000SilverBullet
Quote:
I agree PCM tuning for us is difficult. What you and Scott cooking up for your PCM? Do they have code writen already or do they still need to break it down for us. I assume that they've got a couple codes laying around due to scotts car, but far more advance mods than most of us will ever have.

I live close to Mike Breyer (programmer for DHP) he said that when I'm ready he want'* to go through all the code. I have no problems with that. Said he'* come up with a way to get ride of Tourque management in the 04 GP'*, figures he can figure it out for us too. Also want'* to get more feature'* on the DIC. Probably go to his house so he can code read than come back to the shop for final dyno tuning.

Thanks for the Pulley size info, I'm hoping to be able to run a 3.2 with rockers headers DHP and HVTB Stage 2. Don't really want to get into an ICCU or happy **** yet. Hoping these mods will work out well and I'll drive it for a while, once the miles get up there and the tranny goes, than I'll get more serious.
Sort of what I was thinking too.
I was contacted by DHP and they have a basic one for us.
Zoomer is not recommending the HyperTech over the DHP.
The DHP has the following features which is more extensive than the HyperTech programmer.
FEATURES:
Speed limiter removed
3-1 and 4-2 skip shifts
Transmission line pressure increased --- not supposed to conflict with the Intense shift kit.
Shift points moved (5800-6000rpms)
Fan turn on points altered as follows:
186 degree F turn on
2 minute fan on at key-off (this feature activates when engine coolant is 179 degrees or greater)
MAF calibration adjusted for proper year

Fuel/spark adjustments as follows:
Enrichens fuel delivery for critical problem areas
Provides a consistent power gain across the entire power band
Reduces spark retard (knock retard)
Removes "40MPH WOT lag"
You will probably want faster kr recovery as well. Scott and DHP have some code already for the Bonnies but Scotts car is so radically modified that his chip removes all code throws making it hard to diagnose but not as annoying with all the SES'*.

As for the 3-1 and 4-2 skip shifts don't we do this by default? Maybe we want a 4-1 skip shift? I know i have logged 3rd to 1st drop downs on the autotap....
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Old 02-05-2004, 02:50 PM   #19
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Quote:
Originally Posted by Rogue
As for the 3-1 and 4-2 skip shifts don't we do this by default? Maybe we want a 4-1 skip shift? I know i have logged 3rd to 1st drop downs on the autotap....
No, the car will not "skip shift" from the factory. And setting it up to go from 4-1 is going to do absolutely nothing for you because if you are going fast enough for it to be in OD, you are going to fast for it to downshift back to 1st gear.

Shawn
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