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RB vs. Stock Turbo Dyno
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10-11-2012, 09:03 AM | #1 |
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RB vs. Stock Turbo Dyno
Here is an interesting dyno comparing maxed out OEM turbos to fairly aggressively tuned but not quite maxed out RB turbos. Huge top end gains coupled with lightning fast spool makes for a very fun street car.
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10-11-2012, 09:35 AM | #3 |
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It looks like the biggest diffrence is when the power hits and ends. Overall, the peak power doesn't appear to be that much of an improvement for the cost of the RB's. Still impressive numbers though!
I'd like to see how a single turbo compares to stock with the G5 board. |
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10-11-2012, 09:44 AM | #4 | |
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Ah, you are kidding, I get it now.
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10-11-2012, 10:24 AM | #5 |
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10-11-2012, 10:27 AM | #6 | |
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so one 60-70whp over maxed out stock turbos is a lot,but there is a lot more to be had under the curve because Terry doesn't want to shred his transmission. second, if he had turned up his boost down low, he probably needs a 4 bar sensor for more boost. For 3000$, this is an amazing plug and play upgrade.
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'07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar.
'05 C55 AMG SOLD - '22 Tesla M3P | '10 E92 335i M, 6MT COBB, FBO, st2 LPFP, Mfactory LSD | '07 E90 335i, PTF COBB E50, FBO, HFS4 |
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10-11-2012, 10:33 AM | #7 |
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I just love my RBs, they really are worth every penny. Whether I run them on the JB4 or the Cobb, they just pack so much more punch/power. And the car still drives stock-like. The soundtrack is also much, much better, no more rattle but a subtle whistle in stead
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10-11-2012, 12:16 PM | #8 |
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Couple of questions Mike...What was the max psi on the stock turbos vs RB?
Was meth used and what octane? Overall fantastic gains (70+whp) over stock hairdryers is definitely an improvement but I need to consider Mikes answers before making this assumption. |
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10-11-2012, 12:52 PM | #9 | |
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JB4 G5 ISO Map 3 w/ 80 additive RB Turbos BMS Downpipes BMS DCI BMS 2.2g meth kit w/ CM14 nozzle, running straight ethanol BMS flash BT Intercooler CPE chargepipe w/ Tial valve OEM catback Fuel: 50% E98, 50% 91 octane Datalog:
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10-11-2012, 12:56 PM | #10 |
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Damn, with OEM catback!!! I feel like with a straight pipe setup the power will hold a little bit better after 6k? If I could 500whp all the way through 7k with the vargas that would be literally perfect.
Sorry about the thread jack but that is a very pretty dyno. Just needs to hold that power instead of trailing off!!! Gorgeous!!!
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10-11-2012, 01:02 PM | #11 | |
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For that amount of money, might as well do a single turbo and get more that double the gains you would get with RBs, and keep the stock turbos to sell or put back to stock. 5k for turbo upgrade that nets 70hp tops is a poor investment, period. just my opinion. Edit: Double-check your math man, 60% over FBO? That would make it +260hp on top of 435hp (peak HP on FBO in dyno above). I think you mean 15% more than FBO. Last edited by n54door; 10-11-2012 at 01:14 PM.. |
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10-11-2012, 01:15 PM | #12 | |
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"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
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10-11-2012, 01:19 PM | #13 |
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$42 per whp seems good to me.
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10-11-2012, 01:26 PM | #14 | |
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10-11-2012, 01:26 PM | #15 | ||
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10-11-2012, 01:29 PM | #16 | |
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10-11-2012, 01:31 PM | #17 |
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Mike do you know if anyone exports the RBs to the UK?
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10-11-2012, 01:41 PM | #18 | |
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10-11-2012, 01:47 PM | #19 | |
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10-11-2012, 01:57 PM | #20 | |
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Again, check the math guys.. the quote of 60% gains over FBO is not accurate at all.
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I'm not at all sold on the single just yet. For the $ and current options, and if you must upgrade the turbos right now, RB's seem to be the better deal until the singles become more common than a few cases. I do believe this will change very soon. And, while RB's are a good option because of limited competition, I still would not to say I feel the ROI is a good deal. I have also been called cheap before... hehe. Just spectating and playing devils advocate, that's all! Keep up the good work, I'm a HUGE fan believe it or not. |
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10-11-2012, 01:59 PM | #21 |
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There are more than a few cases on the road already, just a quick point.
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10-11-2012, 02:02 PM | #22 | |
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