Alex L

Has anyone had their 55K mapped for two TB? I'm looking for someone experienced to do my car. Tried both EC & Weistec but neither can help. I'm overseas too which doesn't help.

Can go piggyback with Motec as a last resort but the cost is astronomical. This is for the Weistec blower. Heads polished & ported, bigger valves next (following Sir-Boost-A-Lot's DIY on beehive springs upgrade).

shardul

iTrader: (1)

A single 90mm TB will be more than sufficient for your application.

blackbenzz

A twin TB setup would be nice or a single huge TB like most domestic cars. Unfortunately you are going to be fighting an uphill battle to get either working. It would definitely help feed your blower, especially at higher sc rpm speeds. The 90mm is better than 82mm but I still don't believe it is maximizing the potential

shardul

iTrader: (1)

Alex L

Afraid not as I'm splitting the air intake.

shardul

iTrader: (1)

Understood, but your inlet point post TB into the SC is going to same right ?

Alex L

Same as what?

It's a weistec blower so the inlet manifold is not reusable and has to be made from scratch to split the air intake.

shardul

iTrader: (1)

OK you are making a different inlet, so disregard my question

Alex L

I'm using a pair of standard 74.5mm TBs, giving a combined 106mm TB intake. Can map using a standalone ECU but given the cost, would rather try the Bosch route first.

Hulk

I wanted to do that a while back with 2 stock tb, every tuner I spoke to said it would be a tuning nightmare and idle would be bad as well.

Alex L

Not sure about the idle as bypass valve would take care of that, no?

Hulk

For idle to be perfect you need a certain tps % , when I heard it might be a looooong haul I opted out, not in mood of chasing codes or worse

Forrest Gump 9

I wanted to try this right after I ran the 90mm set up but I at the time my fabricator took a new job so I forgo the project.

But try split just wire #1 & #4 (not sure but they're the ones that open/close the tb). Just run those two wire to the second tb. By doing that you're fooling the ecu to thing that it's still run one large tb. If that doesn't work I will run a micro switch, like the one for nitrous set up, so the second tb only open when wot. That's my little contribution on the subject. Good luck.

Hulk

Was going to run the switch also, just too much hassles imo

stockC43

Sir boost a lot was fitting one of these. http://www.kennebell.net/KBWebsite/A...ts/mam1880.htm

Not sure if it's working though.

Alex L

Point taken. Perhaps I should start saving up for a standalone ECU.

Alex L

Thanks. I'm going to run one motorised, one passive.

Edit. Unless I go with motec in which case both TBs can be hooked up and programmed independently.

latemodel21

Woody (who is the developer of some of Needswings' products) seems to have sorted this out on his SRT6 crossfire (amg 112k motor). Perhaps it is what you are looking for?
http://www.crossfireforum.org/forum/...g-my-srt6.html

Cheers,
Chris

Alex L

Thanks Chris. I'll have a read. Nice to see that bigger intake does actually reduce the IATs. I was hoping that the would be the case. Great to see someone confirming it in real world.

Alex L

Just to update this thread. I'm at the finishing stages of twin TB air inlet design. It will be machined next month, in time for when my engine and heads are back from Weistec. I'm going with Motec ECU which will control both throttle bodies independently. It will be a few good weeks before the next update so stay tuned.

Denroll

Can't wait to see this in action. I hope it works!

Hulk

Good luck, let us know how it works out