98 E10 Tuning?

[DennisRB30]

I am thinking of running my car on this fuel.

I know it will make it run leaner per the same amount on fuel injected due to the oxygen content.

Say I was running a 12.5:1 AFR with ultimate, what would it be running at if I swapped to E10 with no tuning changes? I'm just trying to get a rough idea how much more fuel flow I would require.

After AFR's have been restored. Will it take more or less ignition advance than normal fuel?

[Drift Freak]

Mate, i read an article in one of the performance mags where they got an R32 GTR and ran a full tank of Optimax and put it on the dyno and it spun up about 250Kw at all 4. They drained the tank and put E10 in but didn't change the amount of fuel and advanced the timing due to the fuel being more stable and got an extra 20Kw at the treads by just changing fuel and timing. If your interested i'll try and find the article.

I'm running the E10 in my R32 GST-T with HKS2540, FMIC, 9 pound boost, full 3 inch with dump pipe and i think there onto something coz my car runs better in general revs out smoother and get better economy, I can't wait till i get enough money together to get my Apexi Power FC tuned (still on the shelf in my room).

Hopefully i can get the tuner to do a before and after dyno read out with different fuels.

Anyway thats my 2c, good luck

[fr0st]

I think I've read the same article. I believe the outcome was it let you run timing similar to race gas but compared to the same amount of petrol it runs a few points leaner so you have to add slightly more to get the AFR's right.

Liter for liter E10 has less energy content over non-ethanol fuel so you will lose some economy .

[DennisRB30]

Mate, i read an article in one of the performance mags where they got an R32 GTR and ran a full tank of Optimax and put it on the dyno and it spun up about 250Kw at all 4. They drained the tank and put E10 in but didn't change the amount of fuel and advanced the timing due to the fuel being more stable and got an extra 20Kw at the treads by just changing fuel and timing. If your interested i'll try and find the article.

I'm running the E10 in my R32 GST-T with HKS2540, FMIC, 9 pound boost, full 3 inch with dump pipe and i think there onto something coz my car runs better in general revs out smoother and get better economy, I can't wait till i get enough money together to get my Apexi Power FC tuned (still on the shelf in my room).

Hopefully i can get the tuner to do a before and after dyno read out with different fuels.

Anyway thats my 2c, good luck

Was that E10 98 or E10 100? It would be sweet if you could find the article.

Frost. Yeah it might chew a little bit more but it costs way less from united servos.

[DennisRB30]

Any responses from tuners?

[Sydneykid]

haven't used 98 E10, use 100 E5 (Shell V Power Racing) all the time. Slight change in A/F ratios (leaner) not enough to stress over. But big advances in ignition timing, much faster boost build (standard turbo at 10 psi at 1,800 rpm) and much better throttle response.

Shell V Power Racing works great on the default Power FC Maps, virtually zero knock.

cheers

[DennisRB30]

haven't used 98 E10, use 100 E5 (Shell V Power Racing) all the time. Slight change in A/F ratios (leaner) not enough to stress over. But big advances in ignition timing, much faster boost build (standard turbo at 10 psi at 1,800 rpm) and much better throttle response.

Shell V Power Racing works great on the default Power FC Maps, virtually zero knock.

cheers

Nice! So if you were running on the edge of detonation boost wise (23psi ), E10 will give you a safety margin over normal fuel? (providing AFR's are the same).

[tmc_2]

So if im tuned for bp98 and i use shell100 i should be ok and still have safe a/f ratio.

DennisRB30, i would assume the extra 2 octane in shell100 will help less knock slightly, how much???

[tmc_2]

Double post by accident

Edited February 22, 2007 by tmc_2

[R31Nismoid]

Nice! So if you were running on the edge of detonation boost wise (23psi ), E10 will give you a safety margin over normal fuel? (providing AFR's are the same).

Yep.

You might need to add a tad more fuel. Only way is to check it

[DennisRB30]

So if im tuned for bp98 and i use shell100 i should be ok and still have safe a/f ratio.

DennisRB30, i would assume the extra 2 octane in shell100 will help less knock slightly, how much???

Well yeah. Thats comparing 100 octane to 98 octane so that would be a given. I am talking about 98 octane E10 fuels like boost 98 from United servos.

[TSL]

Ethanol does have better anti-knock properties than regular petrol.

RON : 129 - MON : 102

As for tuning, ethanol is 35% oxygene but also contains less energy than regular automotive fuel.

Typical automotive fuel contains around 45 MJ/kg where as ethanol contains only 26 MJ/kg.

This would indicate that, like methanol, a richer a/f mixture would be required to obtain maximum power.

However in blends as low as 10% it's probably not such an issue.

Long story short, yes you can run a bit more timing.

[GTshortie]

A selected few Budget Petrol and Prime petrol stations also suppy E10 98octane petrol and its PRICED cheaper then regular unleaded too

Budget Petrol and Prime get their fuels from Mobil

[DennisRB30]

A selected few Budget Petrol and Prime petrol stations also suppy E10 98octane petrol and its PRICED cheaper then regular unleaded too

Budget Petrol and Prime get their fuels from Mobil

Any in Brisbane?

[GTshortie]

I don't know buddy, but i know the guys that supply the fuel to Budget and Prime in Sydney area, directly from mobil.

cheers,

Ray

[WMDC35]

lith, what's your thoughts on our gull e10? (vs 98), cheers

[discopotato03]

Everything I read about "E10" suggests that it's not enough ethanol to get back what you lose consumption/power wise . Most of those people were not talking about 98E10 , mainly the lower octane stuff .

When they say 98E10 I'm curious to know what grade ULP they mix the 10% ethanol with to end up at the 98 oct number . The cynic in me reckons its whatever the cheapest means of making something that engines can burn and be tested to show 98 octane numbers . The best option would be blending straight ethanol with 98 oct PULP but where can you get pure anhydrous ethanol so you can tip 5.5L in yourself ? It's possibly better to work how how much E85 contains 5.5L of ethanol , pour that in a fill up with say BP 98ULP .

A .

[WMDC35]

have been considering a mix, are most people mixing the fuel or just letting it mix in the tank?

[SargeRX8]

They should mix just fine in the tank. Id put the ethanol in the tank then the ulp ontop.

I ran 100E10 from united. I got better fuel economy amd my knock which was randomly present in the upper rpm was gone. I will be filling up with that fuel when ever I pass the station.

[bradsm87]

I tried United E10/98 in my liberty once going from BP98. I could hear audible detonation upp hills straight away. Changed back to BP98 and it went away as quickly as it came with the United stuff.